3/8-16 x 4 1/4 ARP 12 Point Stainless Bolt

This bolt has a .630 diameter flange with a 3/8 12 point hex head. ARP grade 8 stainless bolts, studs, and nuts are virtually impervious to rust and corrosion. Rated at 170,000 psi makes these stronger than regular grade 8 fasteners. These are maintenance free fasteners and come with a polished finish.