Product Description
Milwaukee 3/8 in. x 16 in. Flat Boring Bit
Model Number: 48-27-0170
The Milwaukee 48-27-0170 is a 3/8 in. x 16 in. Flat Boring Bit — an extended-length boring bit for drilling through multiple stacked framing members at the small 3/8 in. bore diameter for minimal-size wire routing holes, small fastener pilot holes, and specialty installations requiring this precise bore through deep multi-member wood assemblies. The 16 in. working length provides the reach for drilling through double top plates, multiple joists, built-up headers, and thick timber sections in commercial construction where the standard 6 in. configuration cannot penetrate the complete assembly depth from a single accessible face. At the small 3/8 in. bore, the 16 in. extended length is used for specific applications where both the minimal wire routing bore and the deep assembly penetration are simultaneously required — such as running wire between floors through thick floor framing assemblies or routing through commercial framing configurations that exceed the standard bit's reach.
The flat boring geometry produces clean-sided cylindrical holes with flat bottoms and minimal surface tear-out from the outer spur that scores the wood surface perimeter ahead of the flat cutting face. Heat-treated high carbon steel provides the cutting edge sharpness for clean, consistent holes through sustained multi-member drilling. The self-centering tip establishes the correct hole position without walking during initial contact with the first member's surface, maintaining alignment through the complete 16 in. depth across multiple framing members. Milwaukee's flat boring bit range covers 1/4 in. through 1-1/2 in. in both 6 in. and 16 in. configurations for complete coverage at every standard boring bit diameter.
Available in 6 in. standard length for single-member drilling — see Milwaukee's complete flat boring bit range for all available diameters.
Features
- 16 in. extended length for multi-member drilling and thick structural assemblies
- 3/8 in. small bore for minimal-size wire routing preserving framing member integrity
- Flat boring geometry with outer spur for clean entry face without tear-out
- Heat-treated high carbon steel for sustained sharpness across all framing members
- Available in 6 in. standard length — range covers 1/4 in. through 1-1/2 in.
Specifications
- Diameter: 3/8 in.
- Length: 16 in.
- Material: Heat-Treated High Carbon Steel
- Available Lengths: 6 in. and 16 in.
Includes
- (1) Milwaukee 48-27-0170 3/8 in. x 16 in. Flat Boring Bit
