Screw machine drills are popular in the automotive and construction industries. 1/2" Cobalt Heavy Duty Split Point Stub Drill Bit Screw machine drills (also know as stub or stubby drills) are manufactured to Aerospace Standard 907. Sizes smaller than 1/16 and larger than 1/2 have the 118 degree standard point The 135 degree split point is self-centering and reduces thrust.
Manufactured to Aerospace Standard 907.. They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow. 19/64"x12" HSS Aircraft Extension Drill Bit, Drill Bit Size: 19/64" Sizes smaller than 1/16 and #52 have the 118 degree standard point.
Q Cobalt Heavy Duty Jobber Length Drill Bit Sizes smaller than 1/16” or #52, and larger than 1/2” have the 118° standard point. Heavy Duty 135 Split Point, Cobalt Steel, Jobber Length, manufactured to National Aerospace standard 907. The 135 split point is self-centering and reduces thrust.
Black Oxide High Speed Steel Drill Bit Hand taps are the most versatile taps for hand use, or for tapping under power. Black oxide high-speed steel drill bits are a dependable, general purpose drill designed to perform in a broad range of materials in the iron and steel families..
Z HSS Black Oxide Jobber Length Drill Bit Ideal for production, maintenance or portable drilling jobs.. Surface treated with abrasion-resistant black oxide.