Milwaukee
Milwaukee Tool Carbide Hole Cutter Pilot Bit
- SKU:
- MLW49-57-8660
- Availability:
- Usually Ships Same Day
- Weight:
- 0.04 LBS
Description

DUTY®
Spring-Loaded
Hole Cutter Pilot Bit
Replace the spring-loaded pilot in a compatible Milwaukee one-piece carbide hole cutter.
Product Overview
It fits the one-piece carbide cutter system in 3/4–4-1/2 in diameters. Confirm the cutter family.
The spring assists plug ejection. The pilot starts the center; the cutter makes the final opening.
- System fitSpecified carbide cutters.
- Pilot springHelps eject the cut plug.
- Centered startsGuides the start in hard metals.
- Hex-key serviceInstall or remove the pilot.
Technical Specifications
- Cutter system
- One-piece carbide
- Cutter diameters
- 3/4–4-1/2 in
- Ejection
- Pilot spring
- Installation
- Hex key
- Tool compatibility
- Drill/drivers
- Work materials
- Stainless and mild steel
Choose the Correct Fit
Verify the cutter system and diameter before selecting a replacement pilot.
Disconnect the drill before using a hex key to release or fit the pilot assembly.
Installation & Care
Follow the cutter’s speed, material and lubrication instructions for the complete assembly.
Let metal chips and the cutter cool. Inspect the pilot and spring before returning the cutter to service.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Need help replacing a hole-cutter pilot? Send Willy the cutter model and a description of its pilot assembly.
Important Product Questions
Which cutter sizes accept this pilot?
It is specified for Milwaukee one-piece carbide hole cutters from 3/4 through 4-1/2 in diameter. Cutter family matters as well as diameter.
Is this a complete carbide hole cutter?
No. It is the replacement pilot bit with spring. The surrounding cutter determines the finished hole diameter.
Does the pilot set the cutter’s maximum cutting depth?
Use the complete cutter’s depth rating and instructions. Do not treat a cutter-level stop-shoulder or depth claim as a separate rating for the replacement pilot.