Header Bolt Kit For Chevrolet 3/8˝ dia. bolt, drilled, 3/8˝ wrench Stainless 12-Pt Head

Header Bolt Kit For Chevrolet 3/8˝ dia. bolt, drilled, 3/8˝ wrench Stainless 12-Pt HeadARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12 point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the pplication. Whats more, the compact 12 point inut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut starter nose that helps prevent cross threading.

000 psi tensile strength

ARP quality delivers increasedpre-load clamping force and assures positive timing gear register

They’re forged from premium grade 8740 chrome moly steel and are heat-treated to a nominal rating of 190

Rated at 180

and precision J-form threads rolled after heat-treat to create a fastener that has threads 2000% stronger than others

A sample chart is as follows: ARP offers a highly accurate stretch gauge with a dial indicator that reads in increments of

Finish: Natural

J-form thread rolling after heat-treat and a special profile

A true high performance washer from ARP

Added features include oversized bolt head flange for cam button retention and reduced socket head size to facilitate easy installation and removal

000 psi tensile strength material and proprietary (ARP2000®) 220

but the results are well worth the extra effort