





Milwaukee 13/16" Thunderbolt Silver & Deming Drill Bit 48-89-2748
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.
TECHNICAL SPECIFICATIONS
| Bit Diameter | 13/16" |
| Shank Diameter | 1/2" (Reduced) |
| Shank Type | 3-Flat Secure-Grip™ |
| Overall Length | 6.0" |
| Material | High Speed Steel with Black Oxide Coating |
| Point Angle | 135° Split Point |
| Application | Metal, Wood, Plastic, Stainless Steel, Cast Iron |
WHAT'S IN THE BOX
(1) 13/16" Thunderbolt® Silver & Deming Drill Bit (48-89-2748)
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
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.
TECHNICAL SPECIFICATIONS
| Bit Diameter | 13/16" |
| Shank Diameter | 1/2" (Reduced) |
| Shank Type | 3-Flat Secure-Grip™ |
| Overall Length | 6.0" |
| Material | High Speed Steel with Black Oxide Coating |
| Point Angle | 135° Split Point |
| Application | Metal, Wood, Plastic, Stainless Steel, Cast Iron |
WHAT'S IN THE BOX
(1) 13/16" Thunderbolt® Silver & Deming Drill Bit (48-89-2748)













