Hex Socket Screw

Wholesale Quality Carbon Stee Grade4/8/10 Socket Cap Screw

Wholesale Quality Carbon Stee Grade4/8/10 Socket Cap Screw
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Shanghai Jinrui Norm Parts Supplies Co.,Ltd is one of the leading wholesale quality carbon stee grade4/8/10 socket cap screw manufacturers and suppliers in China, welcome to buy wholesale quality carbon stee grade4/8/10 socket cap screw from our factory and company.

 

Hardware: a screw with a hexagonal recess in the head that is designed to be used with an Allen wrench <At the bottom of this hole is the Allen screw holding the two halves of the elevation knob together. — Patrick Sweeney, Gunsmithing: Rifles, 1999>

 

Usually the standard is regarded as DIN912

 

 

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