Chicago-Latrobe 69859

The CHICAGO-LATROBE 69859 is a reduced shank drill bit set consisting of eight high speed steel drill bits with sizes ranging from 9/16 inch to 1 inch in fractional increments. These drill bits have a shank that is straight with three flats and a general purpose point type. The set includes a metal index case for storage. Each bit has a length of 6 inches, with a flute length of 3 1/8 inches, and includes a spiral flute design intended to route chips during drilling operations. Key Features: - Drill bit sizes included: 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", and 1" - Material: High Speed Steel (HSS) with a HSS machining grade (general purpose grade) - Shank diameter: 1/2 inch, straight with three flats sized for chuck engagement - Point angle: 118 degrees with a conventional general purpose point type - Intended use: intended for drilling applications using high speed steel (HSS) bits; verify material compatibility based on your drilling application requirements - Flute specifications: 2-flute spiral with a helix angle between 30° and 34° - Finish: Black oxide coating - Overall length: 6 inches; flute length: 3 1/8 inches - Depth to diameter ratio: 4 times diameter (4xD) - Measurement system: Fractional inch - Coolant type: coolant is not through the bit; use external coolant when required for the specific drilling application - Includes a metal index case for storage