'Hex Head Cap Screw, 12 Point Head Type, Flange, Grade A574, Alloy Steel, Plain Finish, Thread Size 3/8-16, Thread Type UNC, Length Under Head 1 1/4 In, Thread Length 1 1/4 In, Head Height 3/8 In, Head Width 3/8 In, Flange Dia 9/16 In, Fully Threaded, Right Hand Thread Direction, Thread Class 3A, Tensile Strength 170, 000 PSI, Rockwell Hardness C37-C45, Meets/Exceeds ASTM A574, Package 25'