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7/32-Inch Thunderbolt Black Oxide Drill Bit
- Mfg.#
- 48-89-2720
- Sku#
- 525287
- Thicker web provides greater strength and longer life
- Black oxide coating provides lubricity and resists corrosion of the bit
- 135 deg split-point tip starts on contact to prevent walking, while the parabolic flute clears chips fast
- 3-flat Secure-Grip shank holds the bit firmly in the drill chuck
* Estimated stock levels as of Sun, Mar 15, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
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° 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.
Specifications
General
| Applicable Materials | Metal, Plastic, PVC, Wood |
|---|---|
| Cutting Direction | Right Hand |
| Cutting Edge Material | HSS |
| Finish | Black Oxide |
| Flute Type | Parabolic |
| Material | HSS |
| Number of Flutes | 3 |
| Overall Length | 3-3/4 in |
| Point Angle | 135 deg |
| Point Type | Split |
| Quick Change Shank | No |
| Shank Type | 3-Flat |
| Suitable for | Portable Drills |
| Type | Twist Drill Bit |
Dimensions
| Diameter | 7/32 in |
|---|---|
| Flute Length | 2-1/2 in |
| Shank Diameter | 7/32 in |
| Shank Length | 1-1/4 in |
Manufacturing Details
The following information is subject to change without notice
| Country of Origin | CHN |
|---|---|
| Prop 65 Warning |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
|
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