Milwaukee Thunderbolt cobalt-coated drill bits are designed for extreme durability and long life. The Thunderbolt web features a thicker core than a ... View Full Description

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Item #: 361224 Model #: 48-89-2309

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Specifications

Country of Origin Code CN
Diameter 3/8", 5/16", 1/4", 3/16", 5/32", 9/64", 1/8", 7/64", 3/32", 7/16", 1/2"
Material Cobalt
Split Point Angle 135 deg
Shank Diameter 3/8" 3-Flat, 5/16" 3-Flat, 1/4" 3-Flat, 3/16", 5/32", 9/64", 1/8", 7/64", 3/32", 3/8" Reduced
Bit Size 3/8", 5/16", 1/4", 3/16", 5/32", 9/64", 1/8", 7/64", 3/32", 7/16", 1/2"
Tip Angle 135 deg
Overall Length 5", 4-1/2", 4", 3-1/2", 3-1/8", 2-7/8", 2-5/8", 2-1/4", 5-1/2", 6"
Flute Length 3-5/8", 3-3/16", 3-3/4", 2-5/16", 2", 1-3/4", 1-5/8", 1-1/2", 1-1/4", 4-1/16", 4-1/2"

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Description

Milwaukee Thunderbolt cobalt-coated drill bits are designed for extreme durability and long life. The Thunderbolt web features a thicker core than a standard drill bit, which provides ultimate strength and protects against side-load breakage. A specially designed parabolic flute form clears chips and debris fast to keep the bit cool. A precision start, 135 split point tip starts on contact to keep the bit from walking for fast, accurate holes. Excellent for drilling on curved surfaces, requires less effort to drill, and is highly recommended for use with portable drills.

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