'Weld Stud, Bottom Projection, Steel, Plain Finish, Thread Size 5/16-18, UNC Thread Type, Right Hand Thread Direction, Thread Length 0.680 In, Length under Head 3/4 In, Head Dia 0.740 In, Head Height 0.094 In, Projection Width 0.120 In, Projection Height 0.045 In, Package 100'