ARP 1/2-13 x 3.250 Stainless Steel Bolt, Hex Head, 5-Pack

Brand: Automotive Racing Products (ARP)

These high-strength ARP bolts are great for installing most accessories. The 170,000 psi tensile strength bolts are made of stainless steel with a polished, corrosion-resistant finish. Pack of 5 bolts includes matching washers.

These bolts have 1/2-13 UNC coarse threads and a 3 1/4" under-head length, including the 2" long grip (unthreaded portion). The hex head takes a small 9/16" wrench, but has a full-size 0.85" diameter bearing surface*. Head measures 0.45" high.

* Standard AN960-816 flat washers have a 0.875" OD.