Fasteners & Fittings Tapping Screw, 1-Stage Type A Full Thread, #8-15 Thread, 1-1/2 in Overall Length, Pan Head, Square Drive, C1022/1022 Hardened Steel, Zinc Plated, #2 Drive, 0.306 to 0.322 in Dia x 0.107 to 0.12 in H Head