JEGS Head Bolt Washers

JEGS Head Bolt Washers are machined from 4130 chromemoly steel, heat treated for durability and black oxide coated. Double disc ground to insure parallel surfaces for accurate torque readings and minimize the chance of galling your expensive cylinder heads with the bolt head. Features a chamfered side for the large radii from the shank to underside of the bolt head. Fits 7/16" head bolts common to Small Block/Big Block Chevy. Note: an edge may need to be trimmed (or clipped) for use with large diameter valve springs. .