Product Description
Milwaukee Chuck Key for 3/8 in. Chuck with 15/64 in. Pilot
Model Number: 48-66-3240
The Milwaukee 48-66-3240 is a Chuck Key for Milwaukee 3/8 in. keyed drill chucks with a 15/64 in. pilot pin — a replacement tightening key for Milwaukee corded drills and drill presses equipped with a 3/8 in. keyed chuck that uses the 15/64 in. pilot hole specification. The 15/64 in. pilot pin engages the corresponding pilot hole in the chuck body to positively locate the key and maintain full bevel gear engagement with the chuck's rack teeth during tightening — preventing the key from cocking under torque that would cause the bevel gear to jump teeth or strip the rack engagement before full clamping force is achieved. The 15/64 in. pilot specification distinguishes this chuck key from the more common 1/4 in. pilot 3/8 in. chuck key (48-66-3350) — verify your specific Milwaukee 3/8 in. chuck's pilot hole size before ordering to ensure you select the correct replacement key.
Milwaukee builds the chuck key from quality steel for the repeated tightening cycles of professional daily use. The T-handle provides the grip and mechanical advantage for applying the clamping force needed for secure bit retention. Always remove the chuck key from the chuck completely before starting the drill — operating a drill with the chuck key inserted is a serious safety hazard.
See Milwaukee's complete chuck key lineup for all available specifications for Milwaukee keyed drill chucks.
Features
- 15/64 in. pilot for specific 3/8 in. Milwaukee chucks using this pilot specification
- Verify your chuck uses 15/64 in. pilot — differs from common 1/4 in. pilot version
- Positive pilot engagement for reliable full-torque tightening without key cocking
- Quality steel for durability through professional daily tightening cycles
- Always remove from chuck before starting drill — safety hazard if left inserted
Specifications
- Chuck Capacity: 3/8 in.
- Pilot: 15/64 in.
- Type: Chuck Key with Pilot Pin
- Compatible Tools: Milwaukee Drills with Keyed 3/8 in. Chuck (15/64 in. pilot)
Includes
- (1) Milwaukee 48-66-3240 Chuck Key for 3/8 in. Chuck with 15/64 in. Pilot
