Universal Header Bolt Kit 5/16in wrench, 3/8in, 1.000in UHL Black Oxide 12-Pt Head

Universal Header Bolt Kit 5/16in wrench, 3/8in, 1.000in UHL Black Oxide 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.

You will also note that ARP offers specially undercut studs forseveral engines

A “must” for any serious engine builder

ARP offers High Performance Series bolts that aremade from a premium grade chrome moly and hardened to a nominal tensile strength of 180

ARP offers two styles of Flywheel/Flexplate bolts: The premium grade Pro Series

High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates theneed for valve train removal to facilitate cylinder head retorquing

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

Following heat-treat

Because ARP studs are manufactured to suchexacting tolerances

12-point head design and larger than stock shank diameter for increased strength and improved flywheel register

000 psi range

Complete with washers and nuts where applicable

Both are available in black oxide finished chrome moly steel or polished ARP Stainless