Metallics Sheet Metal Screw, Measurement System: Imperial, #10-12 Thread, 1-1/2 in Overall Length, Indented Hex/Washer Head, Slotted Drive, Steel, Zinc Chromate, Self-Piercing Point, 5/16 in Drive, 0.105 to 0.12 in H x 0.305 to 0.3125 in W Head, UNC Thread, Silver