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Memorial Day Schedule
Bolt Depot is closed Monday, May 27th. Orders placed over the holiday will ship on Tuesday, May 28th.

5/16" x 3-1/2", US, Zinc plated grade 8 steel, External hex

US Fasteners, 5/16" x 3-1/2", Zinc plated grade 8 steel, External hex

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.