These are the absolute ultimate stainless steel head bolts for the Harley Panhead and Shovelhead engines from 1948 to 1984.
Manufactured from custom 450 Stainless! Heat treated (stronger than grade 8 steel) Centerless Ground! Roll Threaded after heat treatment! Polished to a beautiful finish that will never chip, peel, or rust! Stainless Head Bolt Washers Have Been Parallel Ground.