Attributes . 1/16 in Screw Machine Drill, 1/2 in Screw Machine Drill, 1/4 in Screw Machine Drill, 1/8 in Screw Machine Drill, 11/32 in Screw Machine Drill, 13/32 in Screw Machine Drill, 15/32 in Screw Machine Drill, 3/16 in Screw Machine Drill, 3/32 in Screw Machine Drill, 3/8 in Screw Machine Drill, 5/16 in Screw Machine Drill, 5/32 in Screw Machine Drill, 7/16 in Screw Machine Drill, 7/32 in Screw Machine Drill, 9/32 in Screw Machine Drill . Names