2", Chrome plated steel

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.
Carriage bolt

Carriage bolts & Plow bolts

Bolts with no drive, and machine threads for use with a nut.
Socket product

Socket screws

Screws with an allen wrench drive.
Spacer

Spacers

Unthreaded sleeves that fit over bolts or screws to maintain space between components.