Head: 9/16" Indented Hex Head with 3/4" Outside Diameter Fixed Washer
Finish: Black Phosphate
The most common use for these bolts are the door hinges. Each door has (2) hinges. Each hinge typically uses (6) bolts , so this kit will cover (1) full door.
Since they have a black phosphate coating (not painted), the finish will last.
DISCLAIMER: These are largely used on GM cars/trucks from 1966 and older. Most 1967+ applications used a smaller 5/16-18 bolt. We offer both, so please double check your application prior to your purchase to avoid unwanted return shipping charges.