Product Description
Milwaukee Flat Boring Bit 3/4 in. x 6 in.
Model Number: 48-27-0751
The Milwaukee 48-27-0751 is a 3/4 in. x 6 in. Flat Boring Bit — one of the most frequently used sizes in Milwaukee's professional flat boring bit lineup for drilling clean, accurately-sized holes through wood framing, structural lumber, plywood, OSB, Formica, and plastic for electrical, plumbing, and mechanical rough-in applications in wood-frame residential and commercial construction. The 3/4 in. diameter is a heavily used rough-in size that accommodates small flexible conduit, NM cable bundles, low-voltage cable routing, and small plumbing penetrations through wood studs, joists, and plates — it's a diameter that electricians, plumbers, and HVAC installers drill repeatedly throughout a rough-in project and need to complete quickly, cleanly, and accurately at every location. Milwaukee manufactures flat boring bits from heat-treated high carbon steel, applying the heat treatment process to engineer the cutting edge hardness needed to maintain sharpness through the sustained high volume of holes that characterizes production rough-in work without requiring frequent bit replacement or sharpening interruptions.
The flat boring bit's cutting geometry uses a sharp outer spur to score the hole perimeter and a flat, sharp-edged cutting face to shear wood fiber cleanly from the interior — producing smooth, well-defined hole walls with minimal splintering on both the entry face where the bit enters the wood and the exit face where it breaks through the far side of the member. Clean, accurately-sized holes of the specified 3/4 in. diameter reduce material interference during cable and conduit routing, minimize fire-block and firestop treatment requirements at penetration points, and produce a professional installation result even in visible locations. A precision-ground self-centering tip engages the wood surface at the marked hole center before the cutting face contacts the material, preventing the bit from walking away from the intended location during engagement — maintaining hole position accuracy is especially important when drilling through inclined members, at an angle through framing, or near the edge of structural members where slight positional error creates a structural impact.
The 6 in. length handles single-member framing penetrations in standard stud, joist, and plate dimensions while remaining short enough to fit in the confined clearances between framing members during rough-in work. Also available in 16 in. extended length for drilling through double members, built-up beams, and deep structural sections, and across the full diameter range from 1/4 in. through 1-1/2 in. for complete rough-in bit coverage.
Features
- Heat-treated high carbon steel for sharpness retention through high-volume production drilling
- Flat boring geometry produces clean, smooth holes with minimal splintering on entry and exit
- Self-centering tip prevents walking — maintains accurate hole position on all surface angles
- 3/4 in. diameter for flex conduit, NM cable, low-voltage cable, and small plumbing rough-in
- 6 in. length for single-member drilling — available 16 in. for deep members
Specifications
- Diameter: 3/4 in.
- Length: 6 in.
- Material: Heat-Treated High Carbon Steel
- Available Diameters: 1/4 in. through 1-1/2 in.
- Available Lengths: 6 in. and 16 in.
Includes
- (1) Milwaukee 48-27-0751 Flat Boring Bit 3/4 in. x 6 in.
