Product Description
Milwaukee 1/2 in. x 18 in. MX4 SDS+ Carbide Drill Bit
Model Number: 48-20-7377
The Milwaukee 48-20-7377 is a 1/2 in. diameter x 16 in. flute length x 18 in. overall length MX4 SDS+ Carbide Drill Bit — the maximum extended-reach MX4 configuration at the 1/2 in. major commercial anchor diameter for the deepest structural embedments and thickest through-wall penetrations requiring both SDS+ platform convenience and the four-cutter tip's performance advantage in hard commercial concrete. The MX4 four-cutter tip delivers four active carbide cutting contacts per revolution versus the standard two-cutter, maintaining drilling momentum through the hardest aggregate that would slow two-cutter progress noticeably at the large 1/2 in. bore. The 18 in. overall length provides the working reach for thick concrete foundation walls, multi-layer structural assemblies, and the deepest anchor embedments where engineering specifications require maximum embedment depth for the highest available pull-out load ratings in critical structural connections.
At 1/2 in. large bore and 16 in. working depth, Milwaukee's MX4 flute geometry must maintain effective concrete debris transport throughout the full extended working depth — the four-cutter's faster penetration rate generates chip volume at a higher rate than two-cutter bits, requiring the flute design to accommodate both the higher chip volume and the extended evacuation path length. The 1/2 in. diameter covers 3/8 in. wedge anchor, sleeve anchor, and drop-in anchor systems for the medium-duty structural fastening and mechanical equipment mounting applications of commercial construction. The SDS+ shank provides tool-free engagement in all SDS+ rotary hammers.
See Milwaukee's complete MX4 SDS+ catalog for all available 1/2 in. configurations and for all diameters in the four-cutter premium specification.
Features
- MX4 four-cutter for maximum speed and life at large 1/2 in. bore in hard concrete
- 18 in. overall — maximum MX4 reach for deepest 1/2 in. structural embedments
- Four cutting contacts maintain momentum in hardest aggregate at large bore
- 1/2 in. for 3/8 in. wedge, sleeve, and drop-in anchor structural systems
- SDS+ shank for tool-free engagement on all SDS+ rotary hammers
Specifications
- Diameter: 1/2 in.
- Flute Length: 16 in.
- Overall Length: 18 in.
- Tip: MX4 4-Cutter Carbide
- Shank: SDS+
Includes
- (1) Milwaukee 48-20-7377 1/2 in. x 18 in. MX4 SDS+ Carbide Drill Bit
