Product Description
Milwaukee 5/8 in.-11 x 6 in. Core Bit Extension
Model Number: 48-17-6010
The Milwaukee 48-17-6010 is a 5/8 in.-11 x 6 in. Core Bit Extension — a precision-machined 6 in. shaft extension that connects between Milwaukee core bits and the 5/8 in.-11 thread core drill spindle to extend the core bit's drilling depth by 6 in. for through-penetrations in wall and floor sections where the standard core bit barrel depth is insufficient to complete the full hole in a single setup. Core drilling through thick concrete sections, double-wythe CMU walls, elevated concrete slabs from below, and structural wall sections often requires hole depths that exceed the standard barrel length of the core bit — without the correct extension, completing the penetration requires either pulling the bit and re-entering from the opposite side or performing supplemental cutting to access the remaining undrilled material, both of which add time and complication to the coring operation. The 6 in. extension provides the incremental depth addition needed to complete through-penetrations in the most common thick-section situations where the standard bit barrel falls just short of completing the full hole.
The 5/8 in.-11 thread specification is one of the most widely used core drill spindle thread standards across portable core drill machines, rotary hammers in core drilling configuration, and diamond drill stands from multiple equipment manufacturers — the extension mounts between this 5/8 in.-11 spindle and the core bit using the same thread standard for a secure, aligned connection that maintains core bit concentricity through the extension length. Milwaukee manufactures this extension to the precision tolerances needed for concentric core bit rotation — any eccentricity introduced by the extension-spindle interface translates to runout at the cutting face, producing oversized holes and uneven segment wear. The 6 in. length is the standard short extension for adding modest additional reach while keeping the overall setup length manageable for most core drilling positions.
See Milwaukee's complete core bit extension lineup for additional extension lengths and the full range of spindle thread adapters covering all core drill platform compatibility requirements.
Features
- 6 in. extension for through-penetrations in thick walls beyond standard core bit barrel depth
- 5/8 in.-11 thread — compatible with the most common core drill spindle standard
- Precision-machined for concentric core bit rotation through the extension length
- Eliminates need to re-enter thick-section holes from the opposite face
- Available in additional lengths for deeper extension requirements
Specifications
- Extension Length: 6 in.
- Thread: 5/8 in.-11
- Compatible: Core Drill Machines and Rotary Hammers with 5/8 in.-11 Spindle
Includes
- (1) Milwaukee 48-17-6010 5/8 in.-11 x 6 in. Core Bit Extension
