din_standard string | id string | iso_standard string | part_description string | source string | source_quote string | url string | verified_fields list | disagreements list | interchangeability string | bs_standard string | also_reported list | dimension string | din_value string | iso_value string | size string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DIN 1 | din-1 | ISO 2339 | Cone Pins, untempered | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1 | ISO 2339 | | Cone Pins, untempered | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 125 | din-125 | ISO 7089, 7090 | Washer, Plain | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Washer, Plain | DIN 125 | ISO 7089, 7090 | Fully interchangeable | Normal vs chamfered faces. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-125/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Washer, Plain | DIN 125 | ISO 7089, 7090 | Fully interchangeable | Normal vs chamfered faces.",
... | Fully interchangeable | null | null | null | null | null | null |
DIN 126 | din-126 | ISO 7091 | Product grade C washers - designed for use with Hexagon Head Bolts and Nut | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 126 | ISO 7091 | | Product grade C washers - designed for use with Hexagon Head Bolts and Nut | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-126/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 127 | din-127 | null | Spring Lock Washers with square ends or tang ends | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 127 | | BS4464B | Spring Lock Washers with square ends or tang ends | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-127/ | [
"bs_standard",
"din_standard",
"part_description"
] | null | null | BS4464B | null | null | null | null | null |
DIN 128 | din-128 | null | Curved and wave Spring Lock Washers | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 128 | | | Curved and wave Spring Lock Washers | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-128/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 137 | din-137 | null | Spring Washers, curved or wave | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 137 | | | Spring Washers, curved or wave | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-137/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1440 | din-1440 | ISO 8738 | Medium type washers for pins | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1440 | ISO 8738 | | Medium type washers for pins | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1440/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1443 | din-1443 | ISO 2340 | Clevis Pins without head | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1443 | ISO 2340 | | Clevis Pins without head | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1443/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1444 | din-1444 | ISO 2341 | Clevis Pins with head | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1444 | ISO 2341 | | Clevis Pins with head | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1444/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1470 | din-1470 | ISO 8739 | Grooved Pins, full length parallel-grooved with pilot | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1470 | ISO 8739 | | Grooved Pins, full length parallel-grooved with pilot | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1470/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1471 | din-1471 | ISO 8744 | Grooved Pins, full length taper-grooved | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1471 | ISO 8744 | | Grooved Pins, full length taper-grooved | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1471/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1472 | din-1472 | ISO 8745 | Grooved Pins, half length taper-grooved | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1472 | ISO 8745 | | Grooved Pins, half length taper-grooved | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1472/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1473 | din-1473 | ISO 8740 | Grooved Pins, full length parallel-grooved with chamfer | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1473 | ISO 8740 | | Grooved Pins, full length parallel-grooved with chamfer | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1473/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1474 | din-1474 | ISO 8741 | Grooved Pins, half length reverse-grooved | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1474 | ISO 8741 | | Grooved Pins, half length reverse-grooved | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1474/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1475 | din-1475 | ISO 8742 | Grooved Pins, third length centre-grooved | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1475 | ISO 8742 | | Grooved Pins, third length centre-grooved | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1475/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1476 | din-1476 | ISO 8746 | Round Head Grooved Pins | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1476 | ISO 8746 | | Round Head Grooved Pins | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1476/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1477 | din-1477 | ISO 8747 | Countersunk Head Grooved Pins | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1477 | ISO 8747 | | Countersunk Head Grooved Pins | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1477/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1481 | din-1481 | ISO 8752 | Spring-type Straight Pins (roll pins) - heavy type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1481 | ISO 8752 | | Spring-type Straight Pins (roll pins) - heavy type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1481/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1587 | din-1587 | null | Hexagon Domed Cap Nuts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1587 | | | Hexagon Domed Cap Nuts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1587/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1816 | din-1816 | null | Round Nut with set pin holes inside; ISO metric fine thread | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1816 | | | Round Nut with set pin holes inside; ISO metric fine thread | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1816/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 315 | din-315 | null | Wing Nuts with rounded wings | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 315 | | | Wing Nuts with rounded wings | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-315/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 316 | din-316 | null | Wing Screws with rounded wings | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 316 | | | Wing Screws with rounded wings | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-316/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 404 | din-404 | null | Slotted Capstan Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 404 | | | Slotted Capstan Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-404/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 417 | din-417 | DIN EN 27435 | Slotted Set Screw – Long Dog | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Set Screw – Long Dog | DIN 417 | DIN EN 27435 | Check spec | Legacy to EN conversion. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-417/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Slotted Set Screw – Long Dog | DIN 417 | DIN EN 27435 | Check spec | Legacy to EN conversion.",
... | Check spec | null | null | null | null | null | null |
DIN 427 | din-427 | ISO 2342 | Slotted Headless Screw with Shank | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Headless Screw with Shank | DIN 427 | ISO 2342 | Fully interchangeable | Slotted variant. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-427/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Slotted Headless Screw with Shank | DIN 427 | ISO 2342 | Fully interchangeable | Slotted variant."... | Fully interchangeable | null | null | null | null | null | null |
DIN 428 | din-428 | ISO 4034 | Hexagon Nuts, Grade C | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 428 | ISO 4034 | | Hexagon Nuts, Grade C | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-428/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 433 | din-433 | ISO 7092 | Washer, Plain Small | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Washer, Plain Small | DIN 433 | ISO 7092 | Fully interchangeable | Small series. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-433/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | Fully interchangeable | null | null | null | null | null | null |
DIN 433-1 | din-433-1 | ISO 7092 | Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 433-1 | ISO 7092 | | Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-433-1/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 433-2 | din-433-2 | ISO 7092 | Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 433-2 | ISO 7092 | | Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-433-2/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 438 | din-438 | DIN EN 27436 | Slotted Set Screw – Cup | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Set Screw – Cup | DIN 438 | DIN EN 27436 | Check spec | Legacy to EN conversion. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-438/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Slotted Set Screw – Cup | DIN 438 | DIN EN 27436 | Check spec | Legacy to EN conversion.",
"va... | Check spec | null | null | null | null | null | null |
DIN 439 | din-439 | ISO 4035, 4036 | Hex Nut – Thin | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Nut – Thin | DIN 439 | ISO 4035, 4036 | Fully interchangeable | Chamfered/unchamfered covered by ISO pair. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-439/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | Fully interchangeable | null | null | null | null | null | null |
DIN 439-1 | din-439-1 | ISO 4036 | Unchamfered Hexagon Thin Nuts - product grade B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 439-1 | ISO 4036 | | Unchamfered Hexagon Thin Nuts - product grade B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-439-1/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 439-2 | din-439-2 | ISO 4035 | Chamfered Hexagon Thin Nuts - product grades A and B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-439-2/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 440 | din-440 | ISO 7094 | Washers for use in timber constructions | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 440 | ISO 7094 | | Washers for use in timber constructions | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-440/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 444 | din-444 | null | Eyebolts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 444 | | | Eyebolts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-444/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 462 | din-462 | null | Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804 | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 462 | | | Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804 | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-462/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 464 | din-464 | null | Knurled Thumb Screws, high type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 464 | | | Knurled Thumb Screws, high type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-464/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 466 | din-466 | null | Knurled Nuts, high type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 466 | | | Knurled Nuts, high type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-466/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 467 | din-467 | null | Knurled Nuts, low type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 467 | | | Knurled Nuts, low type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-467/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 471 | din-471 | null | Circlips (retaining rings) for shafts; normal type and heavy type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 471 | | | Circlips (retaining rings) for shafts; normal type and heavy type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-471/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 479 | din-479 | null | Square Head Bolts with short dog point | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 479 | | | Square Head Bolts with short dog point | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-479/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 5406 | din-5406 | null | Lock Washers and locking plates for use with rolling bearings | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 5406 | | | Lock Washers and locking plates for use with rolling bearings | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-5406/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 548 | din-548 | null | Round Nuts with set pin holes inside | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 548 | | | Round Nuts with set pin holes inside | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-548/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 551 | din-551 | ISO 4766 | Slotted Set Screw – Flat | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Set Screw – Flat | DIN 551 | ISO 4766 | Check spec | Slot width/tolerance differences. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-551/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Slotted Set Screw – Flat | DIN 551 | ISO 4766 | Check spec | Slot width/tolerance differences.",
... | Check spec | null | null | null | null | null | null |
DIN 553 | din-553 | ISO 7434 | Slotted Set Screw – Cone | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Set Screw – Cone | DIN 553 | ISO 7434 | Check spec | Point geometry. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-553/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Slotted Set Screw – Cone | DIN 553 | ISO 7434 | Check spec | Point geometry.",
"value": "S... | Check spec | null | null | null | null | null | null |
DIN 555 | din-555 | ISO 4034 | M5 to M100x6 Hexagon Nuts - product grade C | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 555 | ISO 4034 | | M5 to M100x6 Hexagon Nuts - product grade C | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-555/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 558 | din-558 | ISO 4018 | Hex Head Bolts (FT), Metric Coarse | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Head Bolts (FT), Metric Coarse | DIN 558 | ISO 4018 | Fully interchangeable | Alt coarse hex FT. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-558/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Hex Head Bolts (FT), Metric Coarse | DIN 558 | ISO 4018 | Fully interchangeable | Alt coarse hex F... | Fully interchangeable | null | null | null | null | null | null |
DIN 580 | din-580 | null | Collar Eyebolts for lifting purposes | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 580 | | | Collar Eyebolts for lifting purposes | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-580/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 601 | din-601 | ISO 4016 | Hex Head Bolts (PT), Metric Coarse | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Head Bolts (PT), Metric Coarse | DIN 601 | ISO 4016 | Fully interchangeable | Alt coarse hex PT. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-601/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Hex Head Bolts (PT), Metric Coarse | DIN 601 | ISO 4016 | Fully interchangeable | Alt coarse hex P... | Fully interchangeable | null | null | null | null | null | null |
DIN 603 | din-603 | null | Mushroom Head Square Neck Bolts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 603 | | | Mushroom Head Square Neck Bolts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-603/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 609 | din-609 | null | Hexagon Fits Bolts with long thread | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 609 | | | Hexagon Fits Bolts with long thread | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-609/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6319 | din-6319 | null | Spherical Washers and conical seats | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6319 | | | Spherical Washers and conical seats | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6319/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6325 | din-6325 | ISO 8734 | Parallel Pins, hardened: tolerance zone m6 | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6325 | ISO 8734 | | Parallel Pins, hardened: tolerance zone m6 | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6325/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6340 | din-6340 | null | Washers for clamping devices | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6340 | | | Washers for clamping devices | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6340/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 653 | din-653 | null | Knurled Thumb Screws, low type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 653 | | | Knurled Thumb Screws, low type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-653/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6797 | din-6797 | null | Toothed Lock Washers | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6797 | | | Toothed Lock Washers | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6797/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6798 | din-6798 | null | Serrated Lock Washers | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6798 | | | Serrated Lock Washers | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6798/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6799 | din-6799 | null | Lock Washers (retaining washers) for shafts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6799 | | | Lock Washers (retaining washers) for shafts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6799/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6900 | din-6900 | ISO 10644 | Screw and Washer assemblies | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6900 | ISO 10644 | | Screw and Washer assemblies | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6900/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6901 | din-6901 | ISO 10510 | Tapping Screw and Washer assemblies | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6901 | ISO 10510 | | Tapping Screw and Washer assemblies | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6901/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6902 | din-6902 | ISO 10673 | Plain Washers for screw and washer assemblies | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6902 | ISO 10673 | | Plain Washers for screw and washer assemblies | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6902/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6903 | din-6903 | ISO 10669 | Plain Washers for tapping screw and washer assemblies | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6903 | ISO 10669 | | Plain Washers for tapping screw and washer assemblies | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6903/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6912 | din-6912 | null | Hexagon Socket Thin Head Cap Screws with pilot recess | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6912 | | | Hexagon Socket Thin Head Cap Screws with pilot recess | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6912/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6914 | din-6914 | ISO 14399-4 | High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6914 | ISO 14399-4 | | High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6914/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6916 | din-6916 | null | Round Washers for high-strength structural steel bolting | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6916 | | | Round Washers for high-strength structural steel bolting | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6916/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6921 | din-6921 | DIN EN 1665 | Hex Head Bolts with Flange | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Head Bolts with Flange | DIN 6921 | DIN EN 1665 | Check spec | Flange OD/serrations/tolerance windows. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6921/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Hex Head Bolts with Flange | DIN 6921 | DIN EN 1665 | Check spec | Flange OD/serrations/tolerance wind... | Check spec | null | null | null | null | null | null |
DIN 6922 | din-6922 | ISO 1665 | Hexagon Flange Bolts with reduced shank | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6922 | ISO 1665 | | Hexagon Flange Bolts with reduced shank | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6922/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6923 | din-6923 | DIN EN 1661 | Hex Nut with Flange | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Nut with Flange | DIN 6923 | DIN EN 1661 | Check spec | Flange geometry/tolerance. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6923/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Hex Nut with Flange | DIN 6923 | DIN EN 1661 | Check spec | Flange geometry/tolerance.",
"valu... | Check spec | null | null | null | null | null | null |
DIN 6924 | din-6924 | ISO 7040 | Prevailing torque type Hexagon Nuts with non-metallic insert | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6924 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6924/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6925 | din-6925 | ISO 7042 | Prevailing torque type all-metal Hexagon Nuts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 6925 | ISO 7042 | | Prevailing torque type all-metal Hexagon Nuts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6925/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 6926 | din-6926 | DIN EN 1663, 1666 | Prevailing Torque Flange Nut | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Prevailing Torque Flange Nut | DIN 6926 | DIN EN 1663, 1666 | Check spec | Deformation style/serrations differ. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6926/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Prevailing Torque Flange Nut | DIN 6926 | DIN EN 1663, 1666 | Check spec | Deformation style/serration... | Check spec | null | null | null | null | null | null |
DIN 6927 | din-6927 | DIN EN 1664, 1667 | Prevailing Torque Flange Nut | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Prevailing Torque Flange Nut | DIN 6927 | DIN EN 1664, 1667 | Check spec | Variant series. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-6927/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Prevailing Torque Flange Nut | DIN 6927 | DIN EN 1664, 1667 | Check spec | Variant series.",
"... | Check spec | null | null | null | null | null | null |
DIN 7045 | din-7045 | null | Pan Head Screws with type H or type Z cross recess - product grade A | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7045 | | | Pan Head Screws with type H or type Z cross recess - product grade A | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7045/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7337 | din-7337 | ISO 14589 | Break mandrel Blind Rivets | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7337 | ISO 14589 | | Break mandrel Blind Rivets | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7337/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7343 | din-7343 | ISO 8750 | Spiral Pins; normal type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7343 | ISO 8750 | | Spiral Pins; normal type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7343/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7344 | din-7344 | ISO 8748 | Spiral Pins; heavy duty type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7344 | ISO 8748 | | Spiral Pins; heavy duty type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7344/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7346 | din-7346 | ISO 13337 | Spring-type Straight Pins; (roll pins) lightweight type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7346 | ISO 13337 | | Spring-type Straight Pins; (roll pins) lightweight type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7346/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7349 | din-7349 | null | Plain Washers for Bolts with heavy clamping sleeves | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7349 | | | Plain Washers for Bolts with heavy clamping sleeves | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7349/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7500-1 | din-7500-1 | ISO 7085 | Thread rolling Screws for metric ISO thread - Part 1: Types, designation, requirements | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7500-1 | ISO 7085 | | Thread rolling Screws for metric ISO thread - Part 1: Types, designation, requirements | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7500-1/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7500-2 | din-7500-2 | null | Thread rolling Screws for ISO metric thread; guideline values for hole diameters | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7500-2 | | | Thread rolling Screws for ISO metric thread; guideline values for hole diameters | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7500-2/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7504 | din-7504 | null | Self-drilling Screws with tapping screw thread - dimensions, requirements and testing | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7504 | | | Self-drilling Screws with tapping screw thread - dimensions, requirements and testing | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7504/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7513 | din-7513 | null | Hexagon Head and slotted head thread cutting screws - dimensions, requirements and testing | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7513 | | | Hexagon Head and slotted head thread cutting screws - dimensions, requirements and testing | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7513/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7516 | din-7516 | null | Cross recessed head thread cutting screws - dimensions, requirements and testing | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7516 | | | Cross recessed head thread cutting screws - dimensions, requirements and testing | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7516/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7603 | din-7603 | null | Ring Seals and Gaskets | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7603 | | | Ring Seals and Gaskets | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7603/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7970 | din-7970 | ISO 1478 | Threads and thread ends for tapping screws (modified version of ISO 1478) | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7970 | ISO 1478 | | Threads and thread ends for tapping screws (modified version of ISO 1478) | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7970/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7971 | din-7971 | ISO 1481 | Slotted Pan Head Tapping Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7971 | ISO 1481 | BS4174 | Slotted Pan Head Tapping Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7971/ | [
"bs_standard",
"din_standard",
"iso_standard",
"part_description"
] | null | null | BS4174 | null | null | null | null | null |
DIN 7972 | din-7972 | ISO 1482 | Slotted Countersunk Head Tapping Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7972 | ISO 1482 | | Slotted Countersunk Head Tapping Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7972/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7973 | din-7973 | ISO 1483 | Slotted Raised Countersunk Head Tapping Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7973 | ISO 1483 | | Slotted Raised Countersunk Head Tapping Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7973/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7976 | din-7976 | ISO 1479 | Hex Head Self-Tapping Screws | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Head Self-Tapping Screws | DIN 7976 | ISO 1479 | Check spec | Point/thread form variations. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7976/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | Check spec | null | null | null | null | null | null |
DIN 7977 | din-7977 | ISO 8737 | Taper Pins with thread ends and constant point lengths | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7977 | ISO 8737 | | Taper Pins with thread ends and constant point lengths | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7977/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7978 | din-7978 | ISO 8736 | Taper Pins with internal thread | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7978 | ISO 8736 | | Taper Pins with internal thread | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7978/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7979 | din-7979 | ISO 8733 | Parallel Pins with internal thread | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7979 | ISO 8733 | | Parallel Pins with internal thread | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7979/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7980 | din-7980 | null | Spring Lock Washers with square ends for cheese head screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7980 | | BS4464A | Spring Lock Washers with square ends for cheese head screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7980/ | [
"bs_standard",
"din_standard",
"part_description"
] | null | null | BS4464A | null | null | null | null | null |
DIN 7981 | din-7981 | ISO 7049 | Cross Recessed Pan Head Tapping | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Cross Recessed Pan Head Tapping | DIN 7981 | ISO 7049 | Check spec | Head/point differences. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7981/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Cross Recessed Pan Head Tapping | DIN 7981 | ISO 7049 | Check spec | Head/point differences.",
... | Check spec | null | null | null | null | null | null |
DIN 7982 | din-7982 | ISO 7050 | Cross Recessed Flat Head Tapping | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Cross Recessed Flat Head Tapping | DIN 7982 | ISO 7050 | Check spec | Countersink/head angle. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7982/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Cross Recessed Flat Head Tapping | DIN 7982 | ISO 7050 | Check spec | Countersink/head angle.",
... | Check spec | null | null | null | null | null | null |
DIN 7983 | din-7983 | ISO 7051 | Cross Recessed Raised Countersunk Tapping | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Cross Recessed Raised Countersunk Tapping | DIN 7983 | ISO 7051 | Check spec | Raised profile tolerance. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7983/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Cross Recessed Raised Countersunk Tapping | DIN 7983 | ISO 7051 | Check spec | Raised profile tole... | Check spec | null | null | null | null | null | null |
DIN 7984 | din-7984 | null | Hexagon Socket Thin Head Cap Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7984 | | | Hexagon Socket Thin Head Cap Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7984/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7985 | din-7985 | ISO 7045 | Cross Recessed Pan Head Screw | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Cross Recessed Pan Head Screw | DIN 7985 | ISO 7045 | Fully interchangeable | General-purpose pan head. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7985/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"field": "part_description",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Cross Recessed Pan Head Screw | DIN 7985 | ISO 7045 | Fully interchangeable | General-purpose pan ... | Fully interchangeable | null | [
{
"as_of": "2026-08-05T00:00:00",
"field": "bs_standard",
"source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
"source_quote": "DIN 7985 | ISO 7045 | BS4183 | Cross recessed raised Phillips Pan Head Screws |",
"value": "BS4183"
}
] | null | null | null | null |
DIN 7989-1 | din-7989-1 | null | Washers for steel structures - product grade C | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7989-1 | | | Washers for steel structures - product grade C | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7989-1/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 7989-2 | din-7989-2 | null | Washers for steel structures - product grade A | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 7989-2 | | | Washers for steel structures - product grade A | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-7989-2/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
End of preview. Expand in Data Studio
DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable
Canonical, always-current version: https://referencesource.org/fastener-standard-interchangeability-exceptions/ Machine-readable: https://referencesource.org/fastener-standard-interchangeability-exceptions/data.json — this mirror is a point-in-time copy.
- Last verified: 2026-08-05
- Stale after: 2029-08-04 (past this date, prefer the canonical copy — it re-verifies on a cadence this snapshot does not)
- Records: 162
Equivalence between withdrawn DIN fastener standards and their current ISO and BS counterparts, and -- the part that is missing everywhere else -- the specific sizes at which the supposedly equivalent parts have different dimensions. Each record is one DIN standard with its ISO and BS counterpart and the publisher's interchangeability verdict, or one size at which a named dimension differs between the two standards. Answers 'is DIN 933 the same as ISO 4017', 'DIN 912 vs ISO 4762 are they interchangeable', 'my drawing says DIN 931 and my distributor only stocks ISO 4014', 'what replaced DIN 934', and 'DIN 125 ISO equivalent washer'. The headline mapping is easy and everyone publishes it; the exception detail is where free sources fail and contradict each other. Wurth, the German distributor that wrote the original catalogues, prints four sizes at which the width across flats changed between DIN 933 and ISO 4017 -- M10 17 mm becomes 16 mm, M12 19 becomes 18, M14 22 becomes 21, M22 32 becomes 34 -- meaning a different spanner. Monster Bolts lists the same pair as fully interchangeable. Both verdicts are published here, attributed, side by side, because the disagreement is the fact.
Provenance — what every record carries
Every record carries source (the URL the value was read from) and
source_quote (a verbatim quote from that page stating it). A value you
cannot check against its page is indistinguishable from an invented one;
these can all be checked. Each record is also individually addressable on
the canonical site at its url.
Licence position
Facts extracted from freely published distributor technical pages. Dimensions are facts, not copyrightable expression (US: Feist, 1991). ISO 4017 and the other ISO fastener documents were not purchased or opened; ISO's own terms restrict use of ISO content, and no ISO content is used here -- only dimensions as facts, quoted from distributors who published them. Three separate distributors, no bulk take from any one: the exception rows come from Wurth, the pair list from Monster Bolts, the BS column from TR Fastenings.
Facts are not copyrightable; what this dataset takes from each source is a fact plus a short attributed quote linking back to the page that states it.
Sources
- https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards
- https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners
- https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php
Fields
See any record in data/records.jsonl — field names are self-describing,
and the canonical page for each record renders them with labels:
https://referencesource.org/fastener-standard-interchangeability-exceptions/
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