Thumb Screw 1)Standard:DIN,ANSI 2) ... ., screws with washer head and self-drilling point, blued galv., screws with self-drilling point and pan head, checkered ... drywall screws (black phosphated), color galv., screws with self-drilling point, color galv., screws, e.g. pan head ... Shape: washer head, pan head, checkered Philips head, self-drilling point,coarse thread, fine thread4) Available: bright, blued ...