Simpson Strong-Tie Self-Drilling Screw, Collated Machine Threaded, Series: Strong-Drive X, Measurement System: Imperial, #12-14 Thread, 1 in Overall Length, Hex Washer Head, Hex Drive, Metal, Quik-Guard Coated, Drill Point, #3 Point, 5/16 in Drive, 0.415 in Head, 0.65 in Thread Length