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Memorial Day Schedule
Bolt Depot will be closed for Memorial Day starting at 12 PM EST on Saturday, May 24th. Orders placed over the holiday will ship on Tuesday, May 27th.
Memorial Day Shipping
UPS and the Postal Service will be closed Monday, May 26th. Orders in transit over the holiday, including express orders, will take an additional day to arrive.
Filters: 5/16" Grade 5 External hex Remove All

US Fasteners Metric Fasteners Associated Products Fastener Assortments

US Fasteners, 5/16", Grade 5, 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.

Flange bolts

Flange bolts

Flange bolts have a flange on the bottom of the head that distributes the load like a washer.