; Grade 8 header bolts are heat treated with black oxide finish; Uses 7⁄16 hex head for quick installation and removal of headers
- For SBC/BBC/90˚ V6 Chevy/Small Block Ford & engines that use a 3⁄8 -16 bolt
- 3⁄8 -16 x 3⁄4 hex head bolts
- 16pk
- Grade 8 header bolts are heat treated with black oxide finish
- Uses 7⁄16 hex head for quick install & removal of headers.