These are the absolute ultimate stainless steel head bolts for the Vintage Harley Panhead and Shovelhead engines from 1948 to 1984.
Manufactured from custom 450 Stainless! Heat treated/Age hardened to 200,000 PSI! (33% stronger than grade 8) Centerless Ground! Roll Threaded after heat treatment!
Hand polished to a beautiful mirror finish that will never chip, peel, or rust! Stainless Head Bolt Washers are Polished on the Top AND Side. Have been Parallel Ground.