ARP 716-4000 1/2-20 x 4" Hex Black Oxide Bolt Kit (5-Pack)

High-strength ARP SAE bolt kit: 1/2-20 thread × 4.000" under-head length, hex head (9/16" wrench), black oxide 8740 chromoly. Includes washers. Rated ~180,000 psi tensile strength for superior performance over Grade 8 hardware. Ideal for automotive, racing, and high-stress applications.

Bolt, 1/2-20 in Thread, 4.000 in Long, 9/16 in Hex Head, Washers Included, Chromoly, Black Oxide, Universal, Set of 5