The common 1/4-28 TPI UNF bolt is used in many applications on various British motorcycles from 1969-onward, such as license bracket mounts, seat hinges, and fender stays. These bolts feature a pleasant zinc finish.
This N.O.S. bolt is utilized in makes/models from 1969-1982: BSA A65, Triumph 500, 650, 750 models and Norton Commandos.
The bolts measure 1/4″ x 1/2″ under head and have 28 TPI UNF threads. The head of the bolts have the correct SNJH-S markings as used from the factory.
The bolts are used in different applications where small fasteners are called for, such as fender stay mounting, coil tray bracket mounting, seat hinges, and license plate bracket mounting.
The bolts are threaded into nuts or a boss and often are used with a flat or spring washer under head.