Query: m5-.80 screw

title: Prime-Line 9121445 Machine Screws, Metric, Flat Head, Phillips Drive, M5-0.8 X 80MM, Grade A2-70 Stainless Steel, (5-pack) , Zinc
text: Product Description Machine screws have a uniform diameter along their entire length and are designed to screw into threaded holes or to be used in combination with machine screw hex nuts. They are frequently used in machinery and appliances. Product Description Machine screws have a uniform diameter along their entire length and are designed to screw into threaded holes or to be used in combination with machine screw hex nuts. They are frequently used in machinery and appliances.

title: M5-0.8 x 8mm Socket Head Cap Screws, 12.9 Grade Alloy Steel, Allen Socket Drive, Black Oxide Finish, Machine Thread, Quantity 100
text: Product Description Read more 12.9 Grade Alloy Steel Made Of 12.9 Grade Alloy Steel, Sturdy And Durable, corrosion resistance property, features good wear resistance, high hardness and high strength, can be used in extreme environments. STANDARD SIZE STANDARD SIZE(Tolerance:±0.005mm): Uniform force, located in the center of the head with no offset, not easy to slip; Uniform pitch, obvious screw thread, no residual burrs, the set screw threads will be able to get a good grip. TRANSPARENT STORAGE BOX Practical and convenient of packing box, All of Bolts are packed in a Transparent storage box, this box can be use for a storage box. Read more M5 socket head screws M6 socket head screws M8 socket head screws M5 Button Head socket head screws M6 Button Head socket head screws M8 Button Head socket head screws Material: stainless steel 18-8 stainless steel 18-8 stainless steel 18-8 stainless steel 18-8 stainless steel 18-8 stainless steel 18-8 Main Color: Silver Tone Silver Tone Silver Tone Silver Tone Silver Tone Silver Tone M5 socket head screws M6 socket head screws M8 socket head screws M5 Button Head socket head screws M6 Button Head socket head screws M8 Button Head socket head screws Material: 12.9 Grade Alloy Steel 12.9 Grade Alloy Steel 12.9 Grade Alloy Steel 10.9 Grade Alloy Steel 10.9 Grade Alloy Steel 10.9 Grade Alloy Steel Main Color: Black Black Black Black Black Black M5 Flat Head Socket Screws M6 Flat Head Socket Screws M8 Flat Head Socket Screws M5 Flat Head Socket Screws M6 Flat Head Socket Screws M8 Flat Head Socket Screws Material: stainless steel 18-8 stainless steel 18-8 stainless steel 18-8 10.9 Grade Alloy Steel 10.9 Grade Alloy Steel 10.9 Grade Alloy Steel Main Color: Silver Tone Silver Tone Silver Tone Black Black Black 

title: DYWISHKEY 150 Pieces M5 x 8mm/10mm/12mm/16mm/20mm, 10.9 Grade Alloy Steel Hex Button Head Cap Bolts Nuts Kit with Hex Wrench
text: Product Description 【Specifications:】 - Color: Black - Quantity: 150 Pieces - Material: 10.9 Grade Alloy Steel - Bolt Type: Hex Button Head Cap Head Bolt - Sizes: M5 x 8mm/10mm/12mm/16mm/20mm 【Features:】 1, 10.9 grade alloy steel with superior rust resistant ensure long lasting results，corrosion resistance, anti-aging, good toughness 2, This kit can be widely used in all kinds of precision machinery, classified instruments, instruments, electronic products, household appliances, communication products, locks, lamps, lights, toys, etc. 【Package Included:】 M5 x 8mm-------------------------20 Pieces M5 x 10mm------------------------20 Pieces M5 x 12mm------------------------20 Pieces M5 x 16mm------------------------20 Pieces M5 x 20mm------------------------20 Pieces M5 Nuts----------------------------50 Pieces 【Total: 150 Pieces, 10.9 Grade M5 Alloy Steel Hex Button Head Cap Bolts Nuts】 【Note: Small parts, keep away from children under 6 years old.】 Product Description 【Specifications:】 - Color: Black - Quantity: 150 Pieces - Material: 10.9 Grade Alloy Steel - Bolt Type: Hex Button Head Cap Head Bolt - Sizes: M5 x 8mm/10mm/12mm/16mm/20mm 【Features:】 1, 10.9 grade alloy steel with superior rust resistant ensure long lasting results，corrosion resistance, anti-aging, good toughness 2, This kit can be widely used in all kinds of precision machinery, classified instruments, instruments, electronic products, household appliances, communication products, locks, lamps, lights, toys, etc. 【Package Included:】 M5 x 8mm-------------------------20 Pieces M5 x 10mm------------------------20 Pieces M5 x 12mm------------------------20 Pieces M5 x 16mm------------------------20 Pieces M5 x 20mm------------------------20 Pieces M5 Nuts----------------------------50 Pieces 【Total: 150 Pieces, 10.9 Grade M5 Alloy Steel Hex Button Head Cap Bolts Nuts】 【Note: Small parts, keep away from children under 6 years old.】

title: M5-0.8 x 20mm Button Head Socket Cap Screws 304 Stainless Steel 18-8 Hex Socket Cap Screws, Allen Hex Drive, Full Thread, Coarse Thread UNC, 50 PCS
text: Product Description SIZE:M5-0.8 x 20mm Specification: Thread Diameter 5mm Head Diameter 9.50mm Head Height 2.75mm Package Included: 50 PCS Button head socket cap screws are precision threaded fasteners with an internal socket drive (also called allen hex drive) for installing in areas with limited side clearance.The internal hex drive requires an Allen wrench. They are known for their effecient application performance and endurance widely used in a variety of industries such as construction, manufacturing, engineering, assembling, aircraft and so on and serves a wide range of use for professionals, amateurs, landlords, repairmen and DIYers. These screws are available with a variety of head shapes, which determine how the screw interacts with the mating surface, and drive styles, which determine the type of tool required to install the screw. The high quality 304 stainless steel provide perfect strength and good corrosion resistance in bad environments like high temperature, cold weather and high humidity areas without the need for time consuming and costly maintenance. Contact Us: If you have any questions when using, please feel free to contact us by Amazon message. Product Description SIZE:M5-0.8 x 20mm Specification: Thread Diameter 5mm Head Diameter 9.50mm Head Height 2.75mm Package Included: 50 PCS Button head socket cap screws are precision threaded fasteners with an internal socket drive (also called allen hex drive) for installing in areas with limited side clearance.The internal hex drive requires an Allen wrench. They are known for their effecient application performance and endurance widely used in a variety of industries such as construction, manufacturing, engineering, assembling, aircraft and so on and serves a wide range of use for professionals, amateurs, landlords, repairmen and DIYers. These screws are available with a variety of head shapes, which determine how the screw interacts with the mating surface, and drive styles, which determine the type of tool required to install the screw. The high quality 304 stainless steel provide perfect strength and good corrosion resistance in bad environments like high temperature, cold weather and high humidity areas without the need for time consuming and costly maintenance. Contact Us: If you have any questions when using, please feel free to contact us by Amazon message.

title: iexcell 25 Pcs M5 x 60/65/70/75/80 Stainless Steel 304 Hex Socket Head Cap Screws Bolts Assortment Kit
text: Product Description 【 5 Sizes M5 Hex Socket Head Cap Screws Assortment and 1 Pcs Hex Key 】 ✔ Meets/Exceeds: DIN 912 ✔ Screw head style: socket cap, head diameter: 8.8 mm, head height: 5.0 mm ✔ Screw drive system: internal hex drives, also known as hex socket, hex size: 4.0 mm ✔ Thread Size ( Diameter ): 5 mm, Thread pitch: 0.8 mm, Thread Length from 60 mm to 80 mm ✔ Material of screws: stainless steel 304, high strength and anti-corrosion in various conditions ✔ Includes 1 Pcs hex key , hex size: 4.0 mm, to drive these screws conveniently and easily ✔ Material of hex key: chrome-vanadium steel, nickel plated, higher strength and anti-rust ✔ Easy to store: all these screws and 1 pcs hex Key packed in a sturdy easy-use plastic storage case, organized conveniently and easily [ M5 x 60 means : metric screws, thread size ( Diameter ): 5.0 mm, thread length 60 mm ] [ Sizes ]-----[ Thread Length ]-----[ Total Length ] M5 x 60 ------ 60 mm/2.36"------- 65 mm/2.56" M5 x 65 ------ 65 mm/2.56"------- 70 mm/2.76" M5 x 70 ------ 70 mm/2.76"------- 75 mm/2.95" M5 x 75 ------ 75 mm/2.95"------- 80 mm/3.15" M5 x 80 ------ 80 mm/3.15"------- 85 mm/3.35" [ Package Contains ] M5 x 60------5 Pcs M5 x 65------5 Pcs M5 x 70------5 Pcs M5 x 75------5 Pcs M5 x 80------5 Pcs Hex Key ---1Pcs [ About Internal Hex drives ] Internal Hex drives, also known as Hex Socket Drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen Wrench [ About Socket Cap Head ] Socket Cap Head , also known as Allen head , have a recessed drive, and are commonly used when there is not enough clearance for a conventional wrench or socket. They are fastened with an Allen wrench, which is also called a hex wrench or hex key Product Description 【 5 Sizes M5 Hex Socket Head Cap Screws Assortment and 1 Pcs Hex Key 】 ✔ Meets/Exceeds: DIN 912 ✔ Screw head style: socket cap, head diameter: 8.8 mm, head height: 5.0 mm ✔ Screw drive system: internal hex drives, also known as hex socket, hex size: 4.0 mm ✔ Thread Size ( Diameter ): 5 mm, Thread pitch: 0.8 mm, Thread Length from 60 mm to 80 mm ✔ Material of screws: stainless steel 304, high strength and anti-corrosion in various conditions ✔ Includes 1 Pcs hex key , hex size: 4.0 mm, to drive these screws conveniently and easily ✔ Material of hex key: chrome-vanadium steel, nickel plated, higher strength and anti-rust ✔ Easy to store: all these screws and 1 pcs hex Key packed in a sturdy easy-use plastic storage case, organized conveniently and easily [ M5 x 60 means : metric screws, thread size ( Diameter ): 5.0 mm, thread length 60 mm ] [ Sizes ]-----[ Thread Length ]-----[ Total Length ] M5 x 60 ------ 60 mm/2.36"------- 65 mm/2.56" M5 x 65 ------ 65 mm/2.56"------- 70 mm/2.76" M5 x 70 ------ 70 mm/2.76"------- 75 mm/2.95" M5 x 75 ------ 75 mm/2.95"------- 80 mm/3.15" M5 x 80 ------ 80 mm/3.15"------- 85 mm/3.35" [ Package Contains ] M5 x 60------5 Pcs M5 x 65------5 Pcs M5 x 70------5 Pcs M5 x 75------5 Pcs M5 x 80------5 Pcs Hex Key ---1Pcs [ About Internal Hex drives ] Internal Hex drives, also known as Hex Socket Drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen Wrench [ About Socket Cap Head ] Socket Cap Head , also known as Allen head , have a recessed drive, and are commonly used when there is not enough clearance for a conventional wrench or socket. They are fastened with an Allen wrench, which is also called a hex wrench or hex key

title: MonsterBolts - M5 x 50mm Flat Head Socket Cap Screws, DIN 7991, Alloy Steel, Black Oxide, Partial Thread, 100 Pack
text: Product Description Monster Bolts - Official Monster-Bolts Fastener Store Units: Metric Category: Flat Head Socket Cap Screws Material: Alloy Steel Black Oxide Thread Direction: Right Handed Diameter: M5 Length: 50mm Pitch: Coarse Quantity: 100 Pack Product Description Monster Bolts - Official Monster-Bolts Fastener Store Units: Metric Category: Flat Head Socket Cap Screws Material: Alloy Steel Black Oxide Thread Direction: Right Handed Diameter: M5 Length: 50mm Pitch: Coarse Quantity: 100 Pack

title: M5-0.80 x 6mm Button Head Socket Cap Screws, Quantity 100 by Fullerkreg, Allen Socket Drive, Passivated 18-8 Stainless Steel, ISO7380, Come in a Plastic Case
text: Product Description What Are Metric Socket Button Screws? Socket Button Screws, also known as Round Screws or Dome Screws, feature a widely used hexagon drive, which is sometimes called a hex drive or Allen drive. Socket Button Head Screws are low-profile, and for safety and aesthetics, their rounded head features no sharp or pointed edges. Button Screws are often used for their decorative qualities. Materials A2 Stainless Steel, also known as 18-8 or 304 Stainless Steel. Metric Socket Button Screws Metric Socket Button Head Screws are manufactured according to ISO 7380, and are available in diameters ranging from M2 up to M12. Lengths of between 3.00mm and 120.00mm are also available. We like what we do. That's why we do it so well. We like what we do. That's why we do it so well. Anchors, screws, clamps. For industrial channels, sanitation and DIY. We generate synergies with our customers, which allow us to increase the business for both of us. Convenient and simple packaging design, focused on the customer. We create it, we believe it. We like what we do. That's why we do it so well. We like what we do. That's why we do it so well. Anchors, screws, clamps. For industrial channels, sanitation and DIY. We generate synergies with our customers, which allow us to increase the business for both of us. Convenient and simple packaging design, focused on the customer. We create it, we believe it. We like what we do. That's why we do it so well. We like what we do. That's why we do it so well. Anchors, screws, clamps. For industrial channels, sanitation and DIY. We generate synergies with our customers, which allow us to increase the business for both of us. Convenient and simple packaging design, focused on the customer. We create it, we believe it. We like what we do. That's why we do it so well. We like what we do. That's why we do it so well. Anchors, screws, clamps. For industrial channels, sanitation and DIY. We generate synergies with our customers, which allow us to increase the business for both of us. Convenient and simple packaging design, focused on the customer. We create it, we believe it. Button Head Socket Cap Screws Item：18-8 Stainless steel Hex Socket Button head Cap Screw According To：ISO 7380-2004 Material：18-8 Stainless steel sus304 Threading: Fully Threaded Surface Treatment：Self Colour Finish Drive Style: Hex Class of Thread：5g6g Button Head Socket Cap Screws ISO 7380 Manufacturing Standard 6mm Length (L) A2 Stainless Steel Material 0.8mm Screw Thread Pitch 3mm Hexagon Socket A/F (A) Self Colour Finish M5 (5mm) Thread Size 2.75mm Maximum Head Length (H) 1.56mm Minimum Hexagon Socket Depth (P) 9.5mm Maximum Head Diameter (D) Button Head Socket Cap Screws Made from 18-8 stainless steel, these button head screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head. Passivated stainless steel screws provide added protection against oxidation and corrosion. WE MANUF ACTURE AND CONTROL THE PRODUCTION PROCESS FOR AWIDE RANGE OF PRODUCTS Can now provide fully customised packaging solutions. With the ability to assemble 5+, 10+,100+ parts per kit. Multiple levels of verification to ensure quality and accuracy. Product undergoes three levels of quality testing (pre-production, 1st article, pre-shipment). Each completed kit is weight-verified, and samples from each lot are inspected prior to shipping. Read more 

title: 25 PCS M5-0.8 x 40mm Socket Head Cap Screws Bolts, Full Thread, Allen Socket Drive, Stainless Steel 18-8, Bright Finish
text: Product Description Product Description Socket cap machine screw which is known for its quality and durability as a precision fastener. It is designed to meet challenging fastening applications in a variety of industries such as construction, automotive, and product manufacturing. Known for its efficient application performance and endurance. Product Specification Screw Style: Button head socket cap; Screw Size: M5-0.80 (5MM); Screw Length: 40MM; Drive Style: 4mm allen hex key; High quality stainless steel 18-8 (304); Package Included: 25 PCS ; 30-day money back guaranteed; Product Description Product Description Socket cap machine screw which is known for its quality and durability as a precision fastener. It is designed to meet challenging fastening applications in a variety of industries such as construction, automotive, and product manufacturing. Known for its efficient application performance and endurance. Product Specification Screw Style: Button head socket cap; Screw Size: M5-0.80 (5MM); Screw Length: 40MM; Drive Style: 4mm allen hex key; High quality stainless steel 18-8 (304); Package Included: 25 PCS ; 30-day money back guaranteed;

title: iexcell 100 Pcs M5 x 8/10/12/16/20 Alloy Steel 10.9 Grade Hex Socket Button Head Cap Screws Bolts Assortment Kit, Black Oxide Finish
text: Product Description 【 100 Pcs Screws + 1 Pcs Hex Key, Come in a 5-grids Organizer Box 】 ✔ Contains 100 Pcs M5 hex socket button head cap screws -- Meets ISO7380 -- Thread diameter: 5 mm ( Range: 4.901 ± 0.075 mm ) -- Thread pitch: 0.8 mm -- 5 Different Thread Lengths from 8 to 20 mm: M5 x 8, M5 x 10, M5 x 12, M5 x 16, M5 x 20 -- Screw head style: button head, head diameter: 9.32 mm ( Range: 9.32 ± 0.18 mm ), head height: 2.625 mm ( Range: 2.625 ± 0.125 mm ) -- Screw drive style: internal hex drives ( hex socket drives ), hex size: 3.0 mm -- Alloy steel, black oxide Finish, high strength and anti-rust; -- Strength grade: 10.9 Grade, tensile strength: 1040 N/mm², Hardness: HRC 32-39 ✔ Contains 1 Pcs hex key,good to drive these screws -- Hex size: 3.0 mm -- Chrome-vanadium steel, nickel plated, higher strength, anti-rust ✔ Eeay to store: these screws and hex key packed in a Sturdy 5-grids plastic organizer box, organized conveniently and easily [ Package Contains ] M5 x 8-----20 Pcs M5 x 10----20 Pcs M5 x 12----20 Pcs M5 x 16----20 Pcs M5 x 20----20 Pcs Hex Key-----1 Pcs Product Description 【 100 Pcs Screws + 1 Pcs Hex Key, Come in a 5-grids Organizer Box 】 ✔ Contains 100 Pcs M5 hex socket button head cap screws -- Meets ISO7380 -- Thread diameter: 5 mm ( Range: 4.901 ± 0.075 mm ) -- Thread pitch: 0.8 mm -- 5 Different Thread Lengths from 8 to 20 mm: M5 x 8, M5 x 10, M5 x 12, M5 x 16, M5 x 20 -- Screw head style: button head, head diameter: 9.32 mm ( Range: 9.32 ± 0.18 mm ), head height: 2.625 mm ( Range: 2.625 ± 0.125 mm ) -- Screw drive style: internal hex drives ( hex socket drives ), hex size: 3.0 mm -- Alloy steel, black oxide Finish, high strength and anti-rust; -- Strength grade: 10.9 Grade, tensile strength: 1040 N/mm², Hardness: HRC 32-39 ✔ Contains 1 Pcs hex key,good to drive these screws -- Hex size: 3.0 mm -- Chrome-vanadium steel, nickel plated, higher strength, anti-rust ✔ Eeay to store: these screws and hex key packed in a Sturdy 5-grids plastic organizer box, organized conveniently and easily [ Package Contains ] M5 x 8-----20 Pcs M5 x 10----20 Pcs M5 x 12----20 Pcs M5 x 16----20 Pcs M5 x 20----20 Pcs Hex Key-----1 Pcs

title: MonsterBolts - M5 x 35mm Flat Head Socket Cap Screws, DIN 7991, Stainless Steel, 10 Pack
text: Product Description Diameter : M5 / 5mm, Thread Size : 0.80 - UNC / Coarse Thread, Drive : M3 / 3mm Hex Key, Type : Flat Head Socket Cap Screw, System of Measurement : Metric, Material : Stainless Steel Grade A2 / 18-8 / Type 304, Specifications : DIN 7991 Product Description Diameter : M5 / 5mm, Thread Size : 0.80 - UNC / Coarse Thread, Drive : M3 / 3mm Hex Key, Type : Flat Head Socket Cap Screw, System of Measurement : Metric, Material : Stainless Steel Grade A2 / 18-8 / Type 304, Specifications : DIN 7991

title: MonsterBolts - M5 x 40mm Button Head Socket Cap Screws, ISO 7380, Stainless Steel, 10 Pack
text: Product Description This listing is for new M5-0.80 / 5mm Stainless Steel Button Head Cap Screws in the length you choose: Diameter : M5 / 5mm Thread Size : 0.80 - UNC / Coarse Thread Drive : M3 / 3mm Hex Key Type : Button Head Socket Screw System of Measurement : Metric Material : Stainless Steel Grade A2 / 18-8 / Type 304 Specifications : ISO 7380/ DIN 9427 Product Description This listing is for new M5-0.80 / 5mm Stainless Steel Button Head Cap Screws in the length you choose: Diameter : M5 / 5mm Thread Size : 0.80 - UNC / Coarse Thread Drive : M3 / 3mm Hex Key Type : Button Head Socket Screw System of Measurement : Metric Material : Stainless Steel Grade A2 / 18-8 / Type 304 Specifications : ISO 7380/ DIN 9427

title: uxcell M5x6mm 10.9 Alloy Steel Button Head Hex Socket Cap Screw Bolt 100pcs
text: Product Description 10.9 Tensile Strength . Alloy Steel material . Hex Socket Button Head . Fastener Type: Socket Screw . Product Description 10.9 Tensile Strength . Alloy Steel material . Hex Socket Button Head . Fastener Type: Socket Screw .

title: uxcell M5x70mm Hex Bolt Socket Head Cap Machine Screws Fasteners Black 20pcs
text: Product Description Alloy Steel material . Socket Head . Fastener Type: Machine Screw . Product Description Alloy Steel material . Socket Head . Fastener Type: Machine Screw .

title: 80/20 Inc, 11-5520, 20 Series, Metric M5 x 20mm Socket Head Cap Screw (SHCS) (15 Pack)
text: Product Description M5 x 20mm Socket Head Cap Screw Product Description M5 x 20mm Socket Head Cap Screw

title: iexcell 100 Pcs M5 x 8/10/12/16/20 Stainless Steel 304 Hex Socket Button Head Cap Screws Bolts Assortment Kit
text: Product Description 【 5 Sizes M5 Hex Socket Button Head Cap Screws Assortment and 1 Pcs Hex Key 】 ✔ Meets/Exceeds: ISO7380 ✔ Screw head style: button head, head diameter: 9.3 mm, head height: 2.6 mm ✔ Screw drive system: internal hex drives, also known as hex socket drives, hex size: 3.0 mm ✔ Thread Size ( Diameter ): 5 mm, Thread pitch: 0.8 mm, Thread Length from 8 mm to 20 mm ✔ Material of screws: stainless steel 304, high strength and anti-corrosion in various conditions ✔ Includes 1 Pcs hex key, hex size: 3.0 mm, to drive these screws conveniently and easily ✔ Material of hex key: chrome-vanadium steel, nickel plated, higher strength and anti-rust ✔ Easy to store: all these screws and 1 pcs hex Key packed in a sturdy easy-use plastic storage case, organized conveniently and easily [ M5 x 8 means : metric screws, thread size ( Diameter ): 5.0 mm, thread length 8 mm ] [ Sizes ]-----[ Thread Length ]-----[ Total Length (Include Head)] M5 x 8 ------ 8 mm/0.31"------- 10.6 mm/0.42" M5 x 10 ------ 10 mm/0.39"------- 12.6 mm/0.50" M5 x 12 ------ 12 mm/0.47"------- 14.6 mm/0.57" M5 x 16 ------ 16 mm/0.63"------- 18.6 mm/0.73" M5 x 20 ------ 20 mm/0.79"------- 22.6 mm/0.89" [ Package Contains ] M5 x 8------20 Pcs M5 x 10------20 Pcs M5 x 12------20 Pcs M5 x 16------20 Pcs M5 x 20------20 Pcs Hex Key ---1Pcs [ About Internal Hex drives ] Internal Hex drives, also known as Hex Socket Drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen Wrench [ About Socket Cap Head ] Socket Cap Head , also known as Allen head , have a recessed drive, and are commonly used when there is not enough clearance for a conventional wrench or socket. They are fastened with an Allen wrench, which is also called a hex wrench or hex key Product Description 【 5 Sizes M5 Hex Socket Button Head Cap Screws Assortment and 1 Pcs Hex Key 】 ✔ Meets/Exceeds: ISO7380 ✔ Screw head style: button head, head diameter: 9.3 mm, head height: 2.6 mm ✔ Screw drive system: internal hex drives, also known as hex socket drives, hex size: 3.0 mm ✔ Thread Size ( Diameter ): 5 mm, Thread pitch: 0.8 mm, Thread Length from 8 mm to 20 mm ✔ Material of screws: stainless steel 304, high strength and anti-corrosion in various conditions ✔ Includes 1 Pcs hex key, hex size: 3.0 mm, to drive these screws conveniently and easily ✔ Material of hex key: chrome-vanadium steel, nickel plated, higher strength and anti-rust ✔ Easy to store: all these screws and 1 pcs hex Key packed in a sturdy easy-use plastic storage case, organized conveniently and easily [ M5 x 8 means : metric screws, thread size ( Diameter ): 5.0 mm, thread length 8 mm ] [ Sizes ]-----[ Thread Length ]-----[ Total Length (Include Head)] M5 x 8 ------ 8 mm/0.31"------- 10.6 mm/0.42" M5 x 10 ------ 10 mm/0.39"------- 12.6 mm/0.50" M5 x 12 ------ 12 mm/0.47"------- 14.6 mm/0.57" M5 x 16 ------ 16 mm/0.63"------- 18.6 mm/0.73" M5 x 20 ------ 20 mm/0.79"------- 22.6 mm/0.89" [ Package Contains ] M5 x 8------20 Pcs M5 x 10------20 Pcs M5 x 12------20 Pcs M5 x 16------20 Pcs M5 x 20------20 Pcs Hex Key ---1Pcs [ About Internal Hex drives ] Internal Hex drives, also known as Hex Socket Drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen Wrench [ About Socket Cap Head ] Socket Cap Head , also known as Allen head , have a recessed drive, and are commonly used when there is not enough clearance for a conventional wrench or socket. They are fastened with an Allen wrench, which is also called a hex wrench or hex key