12.9 grade British and American hexagon socket head screws 5/16-18UNC series

Bright surface and rounded threads

Customized specifications/reliable quality

Smooth and burr-free

Excellent material selection, high practicality and not easy to break

get Best Price

Product Detail

Material：
Alloy steel SCM435/SCM440

Standards：
ANSI/AMSE B18.3

Specification：

5/16-18UNC*1
5/16-18*1-1/2
5/16-18*2'
5/16-18*2-1/2
5/16-18*3'
5/16-18*3-1/2
5/16-18*4-1/2
5/16-18*4'
5/16-18*5

12.9 grade British and American hexagon socket head screws 516-18UNC series.png

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