FULLY THREADED, MACHINE BOLT TYPE; GRADE 2 STEEL MATERIAL; ZINC PLATED FINISH; 2-1/2 INCH; 15/64 INCH HEAD HEIGHT; 9/16 INCH HEAD WIDTH ACROSS FLAT; 3/8 INCH NOMINAL DIAMETER; 16 TPI; QUENCHED AND TEMPERED PROCESS; THREAD TYPE COARSE