Threaded rod

Threaded rod, Brass

Threaded rod diameter is measured on the outside of the threads.

Threaded rod diameter

Diameter and Thread count
Coarse (standard) thread #4-40 #6-32 #8-32 #10-24 #10-32 * #12-24 1/4"-20 5/16"-18 3/8"-16 7/16"-14 1/2"-13 5/8"-11 3/4"-10 7/8"-9 1"-8 Fine thread #10-32 1/4"-28 5/16"-24 3/8"-24 1/2"-20 5/8"-18

* 10-32 is a fine thread, but it is listed under coarse thread because it is very common.

Diameter and Thread count