Product Description
Milwaukee Flat Boring Bit 1 in. x 6 in.
Model Number: 48-27-1001
The Milwaukee 48-27-1001 is a 1 in. x 6 in. Flat Boring Bit — a large professional flat boring bit for drilling clean, full-inch diameter holes through framing lumber, dimensional wood, plywood, OSB, and wood composites for electrical conduit penetrations, plumbing rough-in, HVAC ductwork, and structural applications where the 1 in. bore diameter provides the correct clearance for standard 3/4 in. EMT and IMC conduit, 3/4 in. flexible conduit systems, and medium-diameter plumbing rough-in piping. The 1 in. diameter is one of the most commonly drilled sizes in commercial electrical rough-in — it accommodates 3/4 in. conduit with adequate clearance for smooth routing through the opening, and it is specified for conduit systems throughout commercial office, industrial, and institutional construction where 3/4 in. is the baseline conduit size for branch circuit and feeder installations. Made from heat-treated high carbon steel, Milwaukee's flat boring bit delivers the cutting edge hardness and toughness needed for the sustained high-volume drilling that commercial rough-in projects require across hundreds or thousands of holes per day.
The flat boring bit geometry produces holes with a flat bottom, smooth cylindrical sidewalls, and clean entry and exit faces with minimal wood fiber tear-out — the clean hole profile reduces fiber interference during conduit and cable routing, minimizes the firestop and bushing treatment requirements at penetration points, and produces a professional result that passes inspection in visible locations. A precision-ground self-centering tip ensures accurate hole positioning at the marked center location and prevents bit walking during engagement on smooth and angled wood grain surfaces, maintaining the hole position accuracy that is critical in fire-rated penetration locations where the firestop treatment is sized to the exact hole opening. The 6 in. length handles single-member framing penetrations in standard stud, joist, and rafter dimensions while providing adequate depth for the inter-member clearances in commercial construction framing assemblies.
Available in 16 in. extended length for deep multi-member drilling — Milwaukee's flat boring bit lineup covers 1/4 in. through 1-1/2 in. diameter in both standard and extended lengths for complete rough-in coverage across all conduit and pipe sizes.
Features
- Heat-treated high carbon steel for edge retention through high-volume commercial rough-in drilling
- 1 in. diameter for 3/4 in. EMT, IMC, flex conduit, and medium plumbing rough-in
- Clean entry and exit faces with minimal splintering for professional conduit routing
- Self-centering tip maintains accurate hole position at any drilling angle
- Available in 16 in. extended length — range covers 1/4 in. through 1-1/2 in. diameter
Specifications
- Diameter: 1 in.
- Length: 6 in.
- Material: Heat-Treated High Carbon Steel
- Available Lengths: 6 in. and 16 in.
Includes
- (1) Milwaukee 48-27-1001 Flat Boring Bit 1 in. x 6 in.
