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20, 316, US, 1-1/8"

US Fasteners, 20, 316, 1-1/8"

Hex bolt

Hex bolts

Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.

Set screw

Set screws

Screws with no head and machine threads for use in a tapped hole.

Shoulder bolt

Shoulder bolts

Screws with an unthreaded shoulder that is larger in diameter than the threads. Also known as stripper bolts.