Brand: Automotive Racing Products (ARP)
These high-strength ARP bolts are great for installing most accessories. The 180,000 psi tensile strength bolts are made of 8740 chrome moly with a black oxide finish. Pack of 5 bolts includes matching washers.
These bolts have 7/16-20 UNF threads and a 1" under-head length, with a fully-threaded shank. The hex head takes a small 7/16" wrench, but has an 0.67" diameter bearing surface*. Head measures 0.40" high.
* Standard AN960-716 flat washers have a 0.75" OD.