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1/4 inch UNC Socket Head Button Screws ASME B18.3-2012 in Bright Zinc Plated (BZP) 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.
Image of UNC Socket Head Button Screws ASME B18.3-2012 in BZP image
technical drawing of UNC Socket Head Button Screws ASME B18.3-2012
Technical Summary
d nominal diameter 1/4
tpi threads per inch 20
dk head diameter 0.437
k head height 0.101
t recess depth 0.087
s drive size 5/32
Standard ASME B18.3
Material Bright Zinc Plated (BZP) Steel
all dimensions in inches
datasheet
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technical drawing of UNC Socket Head Button Screws ASME B18.3-2012
Technical Summary
d nominal diameter 1/4
tpi threads per inch 20
dk head diameter 0.437
k head height 0.101
t recess depth 0.087
s drive size 5/32
Standard ASME B18.3
Material Bright Zinc Plated (BZP) Steel
all dimensions in inches
datasheet