Milwaukee® Tool
Milwaukee® Tool 48-89-2731 Thunderbolt® Secure-Grip™ Jobber Length Drill Bit, Black Oxide
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- Milwaukee® Thunderbolt® Black Oxide Jobber length drill bits are designed for extreme durability and long life. The Thunderbolt® web features a thicker core than a standard drill bit to provide ultimate strength and protect against side-load breakage. A specially designed parabolic flute form clears chips fast, while the 3-Flat Secure-Grip™ shank holds the bit firmly in the drill chuck. The 135 deg split point tip delivers a precision start and prevents walking for fast, accurate holes. Effective for drilling on curved surfaces, Milwaukee® Thunderbolt® Black Oxide bits require less effort to drill through metal, wood and PVC and are highly recommended for use with portable drills.
Milwaukee® Jobber Length Drill Bit, Series: Thunderbolt® Secure-Grip™, Imperial, 25/64 in Drill Size - Fraction, 0.3906 in Drill Size - Decimal Inch, 5-1/8 in Overall Length, 3-3/4 in Cutting Depth, Parabolic Flute, 3-3/4 in Flute Length, 3/8 in Shank, 3-Flat Shank, 135 deg Point, Split Point, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Metal, Plastic and Wood
- Extreme durability - thicker web provides greater strength and longer life
- Fast, accurate drilling - 135 deg split point tip starts on contact to prevent walking, while the parabolic flute clears chips fast
- Reduced slipping - 3-flat Secure Grip™ shank holds the bit firmly in the drill chuck
- Versatile - reduced shank diameter for use in 3/8 in chucks
- Corrosion resistant - black oxide coating provides lubricity and resists corrosion of the bit
- MaterialHSSApplicable MaterialsMetal, Plastic and WoodCutting Depth3-3/4Cutting Edge MaterialHSSDrill Diameter Measurement SystemImperialDrill Size - Decimal Inch0.3906Drill Size - Fraction25/64FinishBlack OxideFlute Length3-3/4Flute TypeParabolicManufacturerMilwaukee ToolManufacturer #48-89-2731Overall Length5-1/8 inPoint Angle135Point TypeSplitSeriesThunderbolt Secure-GripShank Size3/8Shank Type3-Flat