Ideal for portable or machine drilling. #53 Cobalt Heavy Duty Stub Drill Bit Screw machine drills (also know as stub or stubby drills) are manufactured to Aerospace Standard 907. Screw machine drills are popular in the automotive and construction industries. 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.
7/64in Cobalt Short Threaded Shank Drill Bit Overall Length When drilling low tensile strength materials. When drilling low tensile strength materials, the Type inDin cobalt drill will have a significantly greater tool life than the NAS 965 Type B high speed steel adapter drill, resulting in a much lower cost per hole..
Precision ground to maintain a high degree of concentricity between shank and body diameter. Ideal for production, maintenance or portable drilling jobs..