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5/16"-24 x 3-1/2"

US Fasteners, 5/16"-24 x 3-1/2"

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.

Socket product

Socket screws

Screws with an Allen wrench drive.