Shock mounting stud is approximately 3-5/8" in overall length. The part where the shock rides, is 5/8" O.D. and approximately 1-1/4" wide and the threads at the shock end are 7/16"-20, about 7/8" long. The threads at the bracket end are 1/2"-20, about 1-1/8" long.
Studs sold individually.