4th of July Schedule
Bolt Depot will be closed on Friday Afternoon July 3rd and Saturday July 4th Orders placed over the holiday will ship on Monday July 6th.

COVID-19 Update:
Bolt Depot is currently shipping orders. Delays by our carriers are possible, including express shipping options. Special procedures are in place for customer pickups. For more details, see our COVID-19 Response.

#4-40 x 3/8"

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.
Machine screw

Machine screws

Screws with machine threads for use with a nut or in a tapped hole.
Socket product

Socket screws

Screws with an allen wrench drive.
Set screw

Set screws

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