Milwaukee 13/16″ S&D Black Oxide Drill Bit

MAXIMIZE TORQUE STABILITY FOR LARGE-DIAMETER METAL DRILLING

When your application demands 13/16″ holes in high-tensile materials like stainless steel or cast iron, standard bits often fail at the web or spin in the chuck. The Milwaukee 48-89-2748 is engineered with a Thunderbolt® core—a thicker, tapered web that provides significantly higher torsional strength to resist side-load breakage. The 135° split point is a critical feature for professional accuracy, ensuring the bit bites immediately on contact without walking, even on curved surfaces. By utilizing a parabolic flute geometry, this bit clears chips at a rapid rate, preventing heat buildup and extending the service life of the cutting edge during deep-hole operations.

• / 135° Split Point Tip starts on contact to eliminate walking and ensure precision hole placement.
• / Thunderbolt® Web design features a thicker core for maximum durability and protection against side-load breakage.
• / 3-Flat Secure-Grip™ Shank prevents the bit from slipping in the chuck under high-torque loads.
• / Black Oxide Coating provides superior lubricity, reducing friction and resisting corrosion for long-term ROI.
• / Parabolic Flute Geometry clears chips and debris quickly to keep the bit cool and maintain cutting speed.