Pan ・・・・・・・・・・・・・・・・・・・・・・・・・・03
Flat ・・・・・・・・・・・・・・・・・・・・・・・・・・04
Hex ・・・・・・・・・・・・・・・・・・・・・・・・・・05
Pias colored cap ・・・・・・・・・・・・・・・・・06
Thin washer ・・・・・・・・・・・・・・・・・・・・・07
Pan washer ・・・・・・・・・・・・・・・・・・・・・07

Wing Pias ・・・・・・・・・・・・・・・・・・・・・・08
Pias stainless capped screw ・・・・・・・・・08
Sealed Hex ・・・・・・・・・・・・・・・・・・・・・09
Sealed Pan ・・・・・・・・・・・・・・・・・・・・・09
Long point(#5) ・・・・・・・・・・・・・・・・・・・09
Mini point ・・・・・・・・・・・・・・・・・・・・・・10

For fixing of deck plates ・・・・・・・・・・・・13
For fixing of deck plate to fixing frame ・・13
Pias cap for deck plate screw ・・・・・・・・13
Fixing frame ・・・・・・・・・・・・・・・・・・・・14
For ALC panel on steel beam ・・・・・・・・14
Pias flower head ・・・・・・・・・・・・・・・・・14

Pias pan for enameled material ・・・・・・15
Twin Pias ・・・・・・・・・・・・・・・・・・・・・・・15
Pias inserts ・・・・・・・・・・・・・・・・・・・・・・15

Super Piasta ・・・・・・・・・・・・・・・・・・・・・17
Piasta ・・・・・・・・・・・・・・・・・・・・・・・・・17
Red Pias ・・・・・・・・・・・・・・・・・・・・・・・18
DS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・19
Pias con ・・・・・・・・・・・・・・・・・・・・・・・21
For ALC panel on wood ・・・・・・・・・・・・22
Washer ・・・・・・・・・・・・・・・・・・・・・・・・22
Packing rubber ・・・・・・・・・・・・・・・・・・22
Bonded washer ・・・・・・・・・・・・・・・・・・22
Technical information・・・・・・・・・・・・10/11

ExcellencePan

Excellent cutting edge

Size

Quantity× small box

LI (Thread)

φdkh

Cross
recessφd

Trivalent
Thickness
applied chrome (White)

SUS410SUS410
Passivated Tin plating

Fully
threadedFully
threadedFully
threaded

SUS410(5.0)

Fully
threadedPan
Austenitic stainless steel

2.3〜4.5

Size

Quantity× small box

I (Thread)

Passivated (For soft material, aluminum etc.)
Fullythreaded

φdkh

Cross
recessφdThickness
appliedFlat

Stable drillability

Flat

Quantity× small box

LI (Thread)

φdkh

Cross
recessφd

Fully
threadedFully
threadedFully
threaded

SUS410(5.0)

Thickness
applied

Trivalent
SUS410chrome (White) Passivated

SUS410Tin plating

Trivalent chrome(white)・SUS-410

SizeHex

Pias screw
Hex
Trivalent chrome(white)・SUS-410

SizeQuantity
× small box

L

I (Thread)

φdkB

hφd

Fully
threadedFully
threaded

SUS410(5.0)

Fully
threadedThickness
applied

Trivalent
chrome (White)

SUS410
Passivated

SUS410Tin plating

Pias colored cap

Pias colored cap

black
Actual colors of the products are different fromthe ones of the phote to some degree.

Caps mounted on screws

HeadDiaDHPanHex

For panFor hex

Custom-made caps
Contact us for other colors.

High-grade-anti-corrosion

Wide range of use and colors

The material, soft polyvinyl chloride, is the same one
selected carefully for the sealing material of window
frame of car, and therefore the cold resistance, heat
resistance and weather resistance, including against UV
light, are guaranteed adequately.
Electro-galvanized steel screws with the caps, which arefastened into color steel plates, stainless and aluminum
plates respectively, pass 20 cycles of sulfur dioxide gas
corrosion test (DIN 50018, 2.0 litters per 300 litter tank).

Suitable for exterior use, for which corrosion resistance,water-proof and good appearance are required, andinterior use, too. 9 colors are available now, and othercolors are also available with no extra charge in that casemore than 50,000 pieces of the cap is ordered at allonce.

Cost savings

Unique mechanism of sealing

More cost-eﬀective compared with others' competitive
products which are aimed for sealing purpose.

Note● Pias cap itself restores the deformed shape, which is caused
during the packing and transporting, to its original state by
exposing it to sun.
● Pias cap is designed to ﬁt in with Pias screws. In that case thecap was put on screw heads of others' products, there would bea possibility that the cap is slipped and inconvenience may becaused to you due to patent law.

For advantageous eﬀect ofWaterproof
skirt
gripping part, the cap is notslipped even when it is exposed
to solar heat. Even in that casescrews are not fastened straight
into panels, the caps seal thescrew heads completely if thetilt is up to 6 degrees. InAir is released
Gripaddition, the caps can stand upto wind speed at 100 meter per
second, and no rain goes inside. Therefore dissimilar
corrosion is prevented which sometimes happens under
the condition that material of panels is diﬀerent fromscrew material.

Thin washer

Trivalent chrome(white) : coarse thread, straight under head.
Size

Quantity× small box

LI (Thread)

φdkCrossrecesshφdThickness
appliedFully
threadedThin washer ・ Pias pan washer

Thin washer

Trivalent chrome(white) : fine pitch thread, 24 threads, tapered under head.
Size

Quantity× small box

LI (Thread)

φdkhc

Cross
recessφdThickness
applied

φdkhc

Cross
recessφdThickness
appliedFully
threadedPias pan washer

Trivalent chrome(white)
SizeQuantity
× small box

LI (Thread)FullythreadedFully
threadedWing Pias

Trivalent chrome(white)
Size

Quantity× small box

LI (Thread)

φdkh

Cross
recessφdThickness
applied

φdkh

Cross
recessφdThickness
appliedφdThickness
appliedFully
threaded

Wing pias ・ Pias stainless steel capped screw

Fully
threadedFully
threaded

Wing Pias

Size

SUS-410 passivation

Quantity× small boxLI (Thread)FullythreadedPias stainless steel capped screw
Trivalent chrome(white)
Cap : Austenitic stainless steel

Size

Quantity× small box

LI (Thread)

φdk

Bhc

φw

Fully
threadedFully
threaded・For details of the washer and rubber, check the page 22.
・Grey rubber is also avilable for bonded washers.

Pias sealed hex

Trivalent chrome(white)
Size

Quantity× small box

LI (Thread)

φdk

Bh

φdkh

φw

φd

Thickness
appliedCross
recessφdThickness
appliedcFullythreadedFully
threadedPias sealed hex ・ Pias sealed pan ・ Long point (No.5 point)

Pias sealed pan

Trivalent chrome(white)
Size

Quantity× small box

LI (Thread)Fullythreaded・For details of the rubber, check the page 22.

Long point (No.5 point)

Trivalent chrome(white) ＋ waxed
Size

Quantity× small box

LI (Thread) φdk
Fully
threaded

Bhc

φdd3

yThickness
applied

Mini point

Trivalent chrome(white)
Size

Quantity× small box

LI (Thread) φdkh

Cross
recess

φdd3

Fully
threadedThickness
appliedSteelAluminum

Ruspert silver
Size

Quantity× small box

LI (Thread) φdkhCross
recessφdd3

Thickness
appliedSteelAluminum

Fullythreaded

Mini point ・ Technical Information

Technical Information
Pias self drilling screws Material : SWCH16A ・ SWCH18A (JIS G 3570)
Chemical composition

Pullout strength ※Screw shank broken
Thread dia

Thickness
1.2mm

Thickness
1.6mm

Thickness
2.3mm

Shear and tensile strength
Thread dia

Shear strength

Thickness
3.2mm

Thickness
4.2mm

Thickness
6.0mm

Torsional torqueTensile strength

Thread dia

TorquePias SUS-410 self drilling screws Material : Stainless steel (JIS G 4309 or AISI SUS-410)
Chemical composition

Pullout strength ※Screw shank broken
Thread dia

Thickness
1.2mm

Thickness
1.6mm

Thickness
2.3mm

Technical information

Shear and tensile strength
Thread dia

Thickness
3.2mm

Thickness
4.2mm

Thickness
6.0mm

Torsional torqueShear strength

Tensile strength

Thread dia

TorquePiasta self drilling screws Material : Austenitic bi-metal stainless steel, A2 (Piasta)
Chemical compositionCu
8.5〜10.5

17.0〜19.0

3.0〜4.0

Thickness
4.2mm

Thickness
6.0mm

Pullout strength ※Screw shank broken
Thread dia

Thickness
1.2mm

Thickness
1.6mm

Thickness2.3mm

Shear and tensile strength
Thread dia

Shear strength

Thickness
3.2mm

Torsional torqueTensile strength

Thread dia

TorqueTrustFor fixing of deck plates

Chrome(Hexavalent chrome screw and washer)
Quantity× small box

Size

LI (Thread)

φdk

B

φw

hc

Thickness
appliedφdStainless steel cap(Trivalent chrome white screw with pias stainless steel cap・Stainless steel washer)
Quantity× small box

Size

For fixing of deck plates ・ For fixing of deck plate to fixing frame ・ Pias cap for deck plate screw

LI (Thread)

φdkBφwhc

φdThickness
appliedLI (Thread)

φdk

B

φw

hc

φdThickness
appliedFor fixing of deck plate to fixing frame
Chrome (Hexavalent chrome screw and washer)
Size

Quantity× small box

Fully
threadedPias cap for deck plate screw
Size

Grey
Blue

Quantity × small box

φdH

Fixing frame
Size

Quantity/carton

HLt

B

For fixing of deckplate to fixing frameP

6.3 25150pieces per carton

Hexavalent chrome

Size

Quantity× small box

LI (Thread)dkw

hφdThickness
appliedSize

Quantity× small box

LI (Thread)

dkw

h

φd

Thickness
appliedPias flower head
Hexavalent chrome

Fully
threaded

Fixing frame・For ALC panel on steel beam・Pias flower head

For ALC panel on steel beam

Pias pan for enameled material
Hexavalent chrome

Size

Quantity× small box

Lφdkh

φd

Thickness
appliedI (Thread)

φdk

h

φd

Thickness
appliedI (Thread)

φdkk

φdThickness
appliedφdkk

φdThickness
appliedI (Thread)Fullythreaded

Twin pias

Hexavalent chrome
Pias pan for enameled material ・ Twin pias ・ Pias inserts

Size

Quantity× small box

L

Pias inserts

Hexavalent chrome (3/8W)
Pias inserts (standard)
Size

Quantity× small box

L

Fully
threadedPias inserts (long point)
Size

Quantity× small box

LI (Thread)FullythreadedInnovation

Fulfilment of desired product against anti-corrosion

Patent obtained in key countries●Drillability and Anti-corrosion

Case-hardened stainless steel(for Super Piasta)
Case-hardened steel(for Piasta)
SELF-DRILLING
POINT

Magnetism in drill point

welded partNo magnetism in head

Stainless steel with high corrosion resistance(Austenitic stainless steel)Super Piasta ・ Piasta

The screw of this photo is Super Piasta.

TypeSize

Quantity× small box

Thickness
appliedSuper Piasta

1.2〜1.6
1.2〜2.3
1.2〜3.2
1.6〜3.2
1.6〜4.0
1.6〜3.2
1.6〜4.0

PiastaTypeSize

Quantity× small box

Thickness
appliedWing screw

2.3〜3.2

Wing screw

2.3〜3.2

Wing screw

2.3〜5.5

Flat

Flat

Super Piasta

Piasta1.2〜1.5
1.2〜2.3
1.2〜3.2
1.6〜2.3
1.6〜3.2

2.3〜4.5
2.3〜6.0

Characteristics of Super Piasta

Self-drilling screw with advantages of 2 stainless steel : one with hardenability and theanother one with high corrosion resistance.
1. Surface treatment

Special passivation with shininess of stainless steel itself.

2. Bi-metal

Austenitic stainless steel for the head and shank.

3. Reliable strengthA2-700N in ISO standard for strength, is guaranteed.

4.Thread no-damage

Hardened threads first tap threads to sheet so no damage on
stainless threads.

5.Power savings

Piasta wing screw
Ruspert Plus

The sharp drill point skips the pre-drilling process andlow load is just necessary for installation.

6.Brilliant appearance andhigh corrosion resistance

Piasta pan
Ruspert Plus

Having the brilliant apperance and high corrosion resistance,
this screw is suitable for exterior and wall material.

Piasta hex
Ruspert Plus

Best solution for installation work to ALC panels
Austenitic stainless steel with high corrosion resistance

RED PiAS
No need to pre-drilling

Size

Quantity× small box

without washer

LI (Thread)

ahbc

φw

φdRed Pias

Fully
threaded

without washer
Fully
threadedFully
threaded

Self-torque-control system
The red head has a torque-control function for driving
torque, and therefore the Red Pias is fastened without
torsional failure even into fragile material.
Installation completed when
the red head is wrenched off.

No need to pre-drilling

New design
For edged crest threads designed specially, the highholding power is guaranteed even for fragile wallmaterial. No board crack occurs,which sometimes occurs
in case of a nail hammered into, and the Red Pias isavailable for thin panels.
・The Red Pias can be used up to 15mm from the edge of
ALC panel, and it contributes to expansion of usage
range.
・This is pulled off by reverse-rotating when fastened intowrong place.

Diamond recess special[International patent]
Stick-fitting and hi-torque screw hole

Diameter

M3

M3.5 M4(4.5)

M5

M6

Recess size DS-10 DS-15 DS-20 DS-25 DS-30

2.82

3.35

3.94

4.52

5.61

LengthType

Size

Quantity × small box

Thickness applied

Surface treatment

SUS305PAN

Trivalent chrome(White)PassivatedFlat

Trivalent chrome(White)Wing screw

Trivalent chrome(White)For ALC

Hexavalent chrome

Mechanism of special tight-fitting screw hole

DS Non-come-out

Cross recess Come-out
Screw headTorquetransmission
wing

Torque transmission wingsof non come-out with nodeformation causes longbit-life, compared withcross recess or Pozi-drive
which stick-wall isdamaged by fastening
torque strength.

Torquetransmission
wingFreerotating

Screw head

Conically curved
sticking wall

Solution of come-out

DS

Cross recess

Torque transmission walls are parallel with the axis, so no
coming up the bit by rotating, resulting in higher workability and less working load.

Configuration of DS●The length A and B is same as the one of hexalobular socker standardized
in JIS, and in addition, the lines specified in C are parallel with each otherso that DS recess has higher pre-clinching. Hexalobular bit can be used toloose the DS socker screws.
●In JIS the area of part E on hexalobular socket is smaller than one of the part F sothat the bit for hexalobular socket doesn't reach to enough strength forcase-hardened screws. On the other hands, for DS recess, the part E is larger sothat the duration of the bit life is dramatically longer.

19C

SafetyPias conpan Ruspert silver
Size

Quantity

LI (Thread)

φdkφdhFully
threadedPias con flatPre drilled
holedia

3.2〜3.5

Fullythreaded

4.3〜4.5

Fullythreaded

5.3〜5.5

Ruspert silver
SizeQuantityLφdk

I (Thread)Pre drilled
holediaφd

Fully
threaded

3.2〜3.5

Fullythreaded

4.3〜4.5

FullythreadedPias con

5.3〜5.5

pan・flat・hex

Pias con hex Ruspert silver
Size

QuantityL

I (Thread)FullythreadedFully
threaded

21

φdk

B

hc

φd

Pre drilled
holedia

4.3〜4.5

5.3〜5.5

For ALC panel on wood

Ruspert silver
Size

Quantity× small box

LI (Thread)dkw

φdhWasher Trivalent chrome(White)/SUS-304
Size

Quantity
× plastic bag

φDφdt

Quantity

φDφdt

For 5mm
For 6mm

Packing rubber(Black)
For ALC panel on wood ・ Washer ・ Paking rubber ・ Bonded washer

Size

For 4mm
For 5mm
For 6mm

Bonded washer

Zinc plated・SUS-304(grey rubber)
Size

Quantity

φDt

For 5mm
For 6mmMaterial : Neoplain

20

PIAS SALES CO.,LTD3-44,4-chome,shinkitajima,
suminoe-ku,Osaka,Japantel 81-6-6681-5858
fax 81-6-6681-5855

http://www.pias-vis.co.jp
Any change on specification permissible due to quality improvement.

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