Carrier Fastener by ARP When assembling a rear-end, optimum reliability can be obtained by employing ARP rugged carrier fasteners. These chromoly bolts and studs are made of 8740 alloy, heat-treated to a nominal tensile strength rating of 200,000 psi, and black oxide finished. Features Fastener Style: Stud Fastener Material: Chromoly Fastener Finish: Black oxide Nuts Included: Yes Washers Included: Yes Benefits Made of 8740 alloy Heat-treated to a nominal tensile strength rating of 200,000 psi Please Note: 2.600 in. length, 7/16-14, 7/16-20 threads. Applications 1997, 1999 – 2019 Ford F-250 What\’s In The Box? 4 – Studs Warranty Manufacturers Standard Warranty