Home / UNC Bolts, Nuts and Washers / UNC Socket Head Shoulder Screws ASME B18.3-2012 with 1/8 inch diameter shoulder in A2 Stainless Steel

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UNC Socket Head Shoulder Screws ASME B18.3-2012 with 1/8 inch diameter shoulder in A2 Stainless Steel

Socket shoulder screw with a UNC imperial coarse thread. They are also known as shoulder bolts, precision shoulder screw and in the US, stripper bolts. The main dimensions are for the diameter and total length required under the head. Shoulder screws have an undercut portion between the thread and shoulder, allowing a close fit. They are used in a wide range of punch and die operations and as shafts, pivots, guides, pins, linkages and trunion mountings. Please note that the nominal diameter here refers to the shoulder diameter, except where shown otherwise.

Image of UNC Socket Head Shoulder Screws ASME B18.3-2012 in A2 image

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

Technical Summary

nominal diameter

4-40

diameter

1/8

D max.

max. diameter

0.1230

D min.

min. diameter

0.1210

dk max.

maximum head diameter

0.250

dk min.

minimum head diameter

0.235

k max.

maximum head height

0.125

k min.

minimum head height

0.115

drive size

5/64 (0.078)

d decimal

nominal diameter decimal

0.1120

tpi

threads per inch

minimum thread length

0.157

Standard

ASME B18.3

all dimensions in inches

Datasheet

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Description	Sale Qtys	Qty	Price	Breakdown	Despatch Estimate
Socket Shoulder Screw UNC 4-40 with 1/8 x 1/8 Inch Shoulder in A2 Stainless WF60647			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 3/16 Inch Shoulder in A2 Stainless WF60648			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 1/4 Inch Shoulder in A2 Stainless WF60649			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 5/16 Inch Shoulder in A2 Stainless WF60650			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 3/8 Inch Shoulder in A2 Stainless WF60651			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 1/2 Inch Shoulder in A2 Stainless WF60652			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 5/8 Inch Shoulder in A2 Stainless WF60653			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 3/4 Inch Shoulder in A2 Stainless WF60654			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 1 Inch Shoulder in A2 Stainless WF60655			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 1-1/4 Inch Shoulder in A2 Stainless WF60656			£0.00
Socket Shoulder Screw UNC 4-40 with 1/8 x 1-1/2 Inch Shoulder in A2 Stainless WF60657			£0.00

Socket Shoulder Screw UNC 4-40 with 1/8 x 1/8 Inch Shoulder in A2 Stainless
WF60647

Socket Shoulder Screw UNC 4-40 with 1/8 x 3/16 Inch Shoulder in A2 Stainless
WF60648

Socket Shoulder Screw UNC 4-40 with 1/8 x 1/4 Inch Shoulder in A2 Stainless
WF60649

Socket Shoulder Screw UNC 4-40 with 1/8 x 5/16 Inch Shoulder in A2 Stainless
WF60650

Socket Shoulder Screw UNC 4-40 with 1/8 x 3/8 Inch Shoulder in A2 Stainless
WF60651

Socket Shoulder Screw UNC 4-40 with 1/8 x 1/2 Inch Shoulder in A2 Stainless
WF60652

Socket Shoulder Screw UNC 4-40 with 1/8 x 5/8 Inch Shoulder in A2 Stainless
WF60653

Socket Shoulder Screw UNC 4-40 with 1/8 x 3/4 Inch Shoulder in A2 Stainless
WF60654

Socket Shoulder Screw UNC 4-40 with 1/8 x 1 Inch Shoulder in A2 Stainless
WF60655

Socket Shoulder Screw UNC 4-40 with 1/8 x 1-1/4 Inch Shoulder in A2 Stainless
WF60656

Socket Shoulder Screw UNC 4-40 with 1/8 x 1-1/2 Inch Shoulder in A2 Stainless
WF60657

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