Milwaukee 21/32" S&D Black Oxide Drill Bit

MAXIMIZE CHIP EJECTION AND TORQUE TRANSFER IN TOUGH ALLOYS

Engineered for the high-torque demands of industrial metalworking, the Milwaukee Thunderbolt Silver & Deming bit utilizes a reinforced web design to withstand the stresses of drilling into stainless steel and cast iron. The specialized parabolic flute geometry is a critical mechanical advantage, aggressively clearing chips to reduce heat buildup and extend the life of the cutting edge. By combining a heavy-duty 135-degree split point with a 3-flat Secure-Grip shank, this bit ensures immediate penetration without walking and eliminates the risk of slippage in a 1/2-inch chuck, delivering the professional ROI required for high-volume production environments.

• / 135° Split Point Tip starts on contact to prevent bit walking and ensures precision hole placement in hard metals.
• / Parabolic Flute Geometry clears chips and debris rapidly to minimize friction and thermal fatigue.
• / 3-Flat Secure-Grip™ Shank provides three milled flats to lock the bit into the chuck, preventing spin-out during high-torque applications.
• / Black Oxide Coating provides essential lubricity and superior corrosion resistance for long-term jobsite durability.
• / 1/2" Reduced Shank allows for large-diameter drilling using standard 1/2" drill chucks.

WHAT'S IN THE BOX

(1) 21/32" Thunderbolt Silver & Deming Black Oxide Drill Bit (48-89-2743)