'Double End Threaded Stud, Steel, Finish Black Oxide, Thread Size 5/16-18, Overall Length 4 In., Thread Length (A) 1-1/8 In., Thread Length (B) 1-1/8 In., Thread Length Type Equal, Thread Type UNC, Shank Type Round, Thread Direction Right Hand, Class 2A, Min. Tensile Strength (PSI) 125, 000, Rockwell Hardness C27, Package Quantity 2'