SLOTTED TYPE; STEEL MATERIAL; ZINC PLATED FINISH; 1-1/2 INCH; 0.153 INCH HEAD HEIGHT; 1/4 INCH NOMINAL DIAMETER; 20 TPI; 0.477 INCH HEAD DIAMETER; FLAT HEAD STYLE; THREAD TYPE 2A EXTERNAL; HEAD COLOR SILVER; PACKAGING QUANTITY 250 PER PACK