SQUARE, NO TWIST TYPE; ASTM A1018/A653/B633 STEEL MATERIAL; ZINC ELECTROPLATED FINISH; 1-5/8 INCH; 1-5/8 INCH; 7/32 INCH THICKNESS; HOT ROLLED PICKLED OILED PROCESS; 3/8 INCH DIA HOLE SIZE; 5/16 INCH BOLT/ROD SIZE; USED ON FLAT PLATE FITTING CHANNEL