Description
Milwaukee 1/4 in. x 10 in. MX4 SDS+ Carbide Drill Bit
Model Number: 48-20-7334
The Milwaukee 48-20-7334 is a 1/4 in. diameter x 8 in. flute length x 10 in. overall length MX4 SDS+ Carbide Drill Bit — the standard extended-reach MX4 configuration at the 1/4 in. anchor diameter for CMU through-wall penetrations and deeper anchor embedments requiring more working depth than the compact 6 in. overall standard configuration. The MX4 four-cutter tip delivers four active carbide cutting contacts per revolution, maintaining drilling momentum through hard aggregate that would slow a two-cutter bit at this small bore over the extended 8 in. working depth. The 10 in. overall length enables through-wall drilling in standard CMU block with finish material, longer concrete screw anchor pilot holes where engineering specifications require greater embedment for higher pull-out ratings, and drilling positions where adjacent structure prevents placing the hammer close to the drilling face.
Milwaukee’s MX4 flute geometry for this small-bore extended configuration maintains effective debris transport from the full 8 in. working depth — the small flute cross-section at 1/4 in. must handle chip evacuation over the extended depth without choking, requiring careful pitch calibration for this specific diameter-length combination in sustained production commercial anchor installation work. For production-volume drilling at this MX4 configuration, bulk pack formats are available for significantly lower per-bit cost. The SDS+ shank provides tool-free engagement in all SDS+ rotary hammers.
See Milwaukee’s complete MX4 SDS+ catalog for all available 1/4 in. configurations and all diameters in the four-cutter premium specification.
Features
- MX4 four-cutter tip for faster speed and longer life vs. standard 2-cutter SDS+ bits
- 1/4 in. for light-duty concrete screw anchors and small expansion fasteners
- 10 in. overall for CMU through-walls and deeper embedment anchor installations
- Four contacts maintain momentum in hard concrete over extended 8 in. working depth
- SDS+ shank for tool-free engagement on all SDS+ rotary hammers
Specifications
- Diameter: 1/4 in.
- Flute Length: 8 in.
- Overall Length: 10 in.
- Tip: MX4 4-Cutter Carbide
- Shank: SDS+
Includes
- (1) Milwaukee 48-20-7334 1/4 in. x 10 in. MX4 SDS+ Carbide Drill Bit
