Home / UNC Bolts, Nuts and Washers / 4-40 inch UNC Socket Head Button Screws ASME B18.3-2012 in A2 Stainless Steel

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4-40 inch UNC Socket Head Button Screws ASME B18.3-2012 in A2 Stainless Steel

A popular and attractive socket head screw, typically used where aesthetics are important, or where a lower profile domed finish is required. The hex drive is generally smaller than other hex driven ranges and thus the ultimate tightening torque is reduced. Manufactured to ASME/ANSI B18.3, and always fully threaded.

technical drawing of UNC Socket Head Button Screws ASME B18.3-2012

Technical Summary

nominal diameter

4-40

tpi

threads per inch

head diameter

0.213

head height

0.052

recess depth

0.035

drive size

1/16

Standard

ASME B18.3

Material

A2 Stainless Steel

all dimensions in inches

datasheet

< View All Sizes

Description	Sale Qtys	Qty	Price	Breakdown	Despatch Estimate
4-40 x 1/8 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17138			£0.00
4-40 x 3/16 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17139			£0.00
4-40 x 1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17140			£0.00
4-40 x 5/16 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17141			£0.00
4-40 x 3/8 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17142			£0.00
4-40 x 1/2 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17144			£0.00
4-40 x 5/8 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17145			£0.00
4-40 x 3/4 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17146			£0.00
4-40 x 1 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17147			£0.00
4-40 x 1-1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17148			£0.00
4-40 x 1-1/2 UNC Socket Head Button (Dome) Screw in A2 Stainless WF17149			£0.00

4-40 x 1/8 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17138

4-40 x 3/16 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17139

4-40 x 1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17140

4-40 x 5/16 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17141

4-40 x 3/8 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17142

4-40 x 1/2 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17144

4-40 x 5/8 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17145

4-40 x 3/4 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17146

4-40 x 1 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17147

4-40 x 1-1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17148

4-40 x 1-1/2 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17149

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