





Milwaukee 1-1/8" Thunderbolt Black Oxide Silver & Deming Drill Bit 48-89-2753
MAXIMIZE BORE DIAMETER WITHOUT SACRIFICING CORE STRENGTH
Large-diameter drilling in stainless steel or cast iron demands a bit that balances aggressive material removal with structural integrity. The Thunderbolt Silver & Deming series utilizes a thicker core than standard twist bits, significantly reducing the risk of breakage under high-load applications. The parabolic flute design is engineered specifically for rapid chip ejection, preventing the heat buildup that typically dulls inferior bits during deep-hole penetration. For the professional, this means faster cycle times and a higher return on investment per bit in high-tensile materials.
- / Thunderbolt Web design provides a thicker core for increased strength and protection against side-load breakage.
- / 135° Split Point tip delivers immediate engagement on contact, eliminating the need for a center punch even on curved surfaces.
- / 3-Flat Secure-Grip shank locks into 1/2" chucks to ensure maximum torque transfer without bit slippage.
- / Black Oxide coating provides essential lubricity, reducing friction and extending the service life of the cutting edges.
TECHNICAL SPECIFICATIONS
| Diameter | 1-1/8" |
| Shank Size | 1/2" Reduced |
| Shank Type | 3-Flat Secure-Grip™ |
| Coating | Black Oxide |
| Point Angle | 135° Split Point |
| Flute Geometry | Parabolic |
| Length | 6" |
WHAT'S IN THE BOX
(1) 1-1/8" Thunderbolt Black Oxide Silver & Deming Drill Bit (48-89-2753)
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
MAXIMIZE BORE DIAMETER WITHOUT SACRIFICING CORE STRENGTH
Large-diameter drilling in stainless steel or cast iron demands a bit that balances aggressive material removal with structural integrity. The Thunderbolt Silver & Deming series utilizes a thicker core than standard twist bits, significantly reducing the risk of breakage under high-load applications. The parabolic flute design is engineered specifically for rapid chip ejection, preventing the heat buildup that typically dulls inferior bits during deep-hole penetration. For the professional, this means faster cycle times and a higher return on investment per bit in high-tensile materials.
- / Thunderbolt Web design provides a thicker core for increased strength and protection against side-load breakage.
- / 135° Split Point tip delivers immediate engagement on contact, eliminating the need for a center punch even on curved surfaces.
- / 3-Flat Secure-Grip shank locks into 1/2" chucks to ensure maximum torque transfer without bit slippage.
- / Black Oxide coating provides essential lubricity, reducing friction and extending the service life of the cutting edges.
TECHNICAL SPECIFICATIONS
| Diameter | 1-1/8" |
| Shank Size | 1/2" Reduced |
| Shank Type | 3-Flat Secure-Grip™ |
| Coating | Black Oxide |
| Point Angle | 135° Split Point |
| Flute Geometry | Parabolic |
| Length | 6" |
WHAT'S IN THE BOX
(1) 1-1/8" Thunderbolt Black Oxide Silver & Deming Drill Bit (48-89-2753)













