BBC front offset mag drive spud fastener kit. Included are three heat treated steel studs that will work with most all BBC cams and includes three cad plated jet nuts that have locking threads.
Threads are 5/16-18" on the cam end and 5/16-24" on the nut end. Works with mag drive #2500-0010 or #2500-0023 mag drive spud.
Stud is 1.630" long, 5/16"-18 x .450"coarse thread, .150" shoulder, 5/16"-24 x .750" fine thread and a .200" quick start tip.