'Double End Threaded Stud, Thread Size 3/8-16, Overall Length 4 1/2 In, Steel, Thread Length Type Equal, Black Oxide Finish, UNC Thread Type, Thread Length 1 1/4 In, Thread Length Opposite End 1 1/4 In, Shank Type Square, Right Hand Thread Direction, Rockwell Hardness 27RC, Min Tensile Strength 125, 000 PSI, Class 2A, Package 2'