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4-40 x 1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless - ASME B18.3

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.
Image of UNC Socket Head Button Screws ASME B18.3-2012 in A2 image
technical drawing of UNC Socket Head Button Screws ASME B18.3-2012
Technical Summary
d nominal diameter 4-40
tpi threads per inch 40
dk head diameter 0.213
k head height 0.052
t recess depth 0.035
s drive size 1/16
Standard ASME B18.3
all dimensions in inches
Datasheet
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Description Sale Qtys Qty Price Breakdown Despatch Estimate
4-40 x 1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17140
£1.85
4-40 x 1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless   WF17140
£1.85
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technical drawing of UNC Socket Head Button Screws ASME B18.3-2012
Technical Summary
d nominal diameter 4-40
tpi threads per inch 40
dk head diameter 0.213
k head height 0.052
t recess depth 0.035
s drive size 1/16
Standard ASME B18.3
all dimensions in inches
Datasheet
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