Power Outage Unfortunately, we are currently experiencing a storm related power outage. Parts of the website may be unavailable until power is restored.

5/16"-18 x 4-1/2", Chrome plated steel, External hex

US Fasteners

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.