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, 11/64 in Screw Machine Drill, 13/32 in Screw Machine Drill, 13/64 in Screw Machine Drill, 15/32 in Screw Machine Drill, 15/64 in Screw Machine Drill, 17/64 in Screw Machine Drill, 19/64 in Screw Machine Drill, 21/64 in Screw Machine Drill, 23/64 in Screw Machine Drill, 25/64 in Screw Machine Drill, 27/64 in Screw Machine Drill, 29/64 in Screw Machine Drill, 3/16 in Screw Machine Drill, 3/32 in Screw Machine Drill, 3/8 in Screw Machine Drill, 31/64 in Screw Machine Drill, 5/16 in Screw Machine Drill, 5/32 in Screw Machine Drill, 5/64 in Screw Machine Drill, 7/16 in Screw Machine Drill, 7/32 in Screw Machine Drill, 7/64 in Screw Machine Drill, 9/32 in Screw Machine Drill, 9/64 in Screw Machine Drill . Names