Grade A325 hex bolt

Structural bolts A325, Hot dipped galvanized steel

Hex bolt diameter is measured on the outside of the threads.

A325 structural hex bolt diameter

Diameter and Thread count

See also

Metric hex bolt

Metric 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.