Mr. Gasket - 919G - HEADER BOLTS-HEX HEAD
Designed for quick, easy installation of headers and heat-treated for extra strength. The special washer faced, smaller-than-standard hex head is ideal for tight spaces. These bolts are Grade 5 with a 7/16 hex head and a protective black finish, except where noted. 3/8"-16 x 3/4"(16/set).