. #9 Cobalt Heavy Duty Split Point 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. Ideal for portable or machine drilling.
3-Flat shank creates an extra secure hold in your chuck. 1-29/64" Reduced Shank HSS Contractor Drill Bit, 1/2" Shank Common flute and overall length for minimal adjustment during tool changes 3" Flute Length, 6" Overall Length, 1/2" Shank 135 degree split point tip for self-centering and reducing thrust. Contractor grade drill bit manufactured from M1 High Speed Steel.
They are also appropriate for tapping the vast majority of materials in through or blind holed conditions. m8x1. Plug Style: Generally used in thru holes.