Ramset 1516SDC Powder Actuated Pins & Threaded Studs; Type: Drive Pin w/Washer ; Shank Length (Inch): 2-1/2 ; Shank Diameter (Decimal Inch): 0.1450 ; Head Diameter (Decimal Inch): 0.3000 ; Material: Steel ; Finish/Coating: Standard Finish; Zinc-Plate