5-Pack Bolt Kit, 12-Point Head S/S 611-0750 AR611-0750 1/4" UNC x .750" UHL With 5/16" Socket Head SS 12PT BOLTS 1/4" UNC x .750" Available in a variety of sizes to suit your needs, all ARP 12-point nuts are constructed from 8740 chrome moly steel or ARP Stainless, and meet ARP's highest standards of quality. Rated at 180,000 psi tensile strength, ARP 12-point nuts are manufactured in thick wall versions for optimum strength and rigidity and thin wall versions for applications with limited space requirements. All 8740 chrome moly steel nuts are black oxide finished and all ARP Stainless nuts are polished to a briliant luster.