This high-strength 7/16" diameter x 5" long stud was designed by ARP to provide more reliable alternator mounting. The 200,000 psi tensile strength stud has 7/16-14 UNC threads at one end and 7/16-20 UNF threads at the other. Black oxide finish. Includes a matching washer and 12-point nut for the 7/16-20 end. Sold individually.
This stud also fits the standard FF1600 gearbox adapter ring for Hewland Mk-series gearboxes. This stud is 1/2" longer than the standard 4.5" lower stud. Some chassis (such as Tiga) use the lower stud to attach a crossmember and need an extended stud like this.