ARP SAE Bolt 5-Packs, 1/4-20 UNC, Black Oxide Finish

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. All bolts are packaged in sets of 5 bolts with matching washers.

These bolts are all threaded 1/4-20 UNC (SAE coarse thread pitch). The thread length is 1" on all sizes longer than 1 1/4" (sizes shorter than 1 1/2" have a fully-threaded shank). The flange head (hex or 12-point) takes a 5/16" wrench but has a full 0.515" OD bearing surface. Black oxide finish looks great and will accept paint with minimal prep work.

1/4-20 UNC is the size used on the FF1600 oil pan, valve cover, and front and rear covers.