Get maximum reliability through the use of ARP’s rugged 8740 chrome moly steel front mandrel bolts. They’re undercut to provide the required stretch, shot-peened for extra durability and designed for full thread engagement. Nominally rated at 200,000 psi tensile strength for durability you can count on! Available for GM and Ford applications. PartNumber : arp330-0709 Description : Front Mandrel Bolts; 12Point Head Diameter : 7/16 Thread Length : 1 Length : 5.5 Socket : 1/2 Uncategorized::Uncategorized