Product Description
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Milwaukee 3/8 in. Chuck Key
Model Number: 48-66-3080
The Milwaukee 48-66-3080 is a 3/8 in. Chuck Key — a replacement tightening key for Milwaukee corded drills and drill presses equipped with a keyed 3/8 in. drill chuck that requires a chuck key for bit installation and removal. Keyed drill chucks use a rack-and-pinion mechanism that is engaged and turned by the chuck key's bevel gear to tighten or loosen the chuck's three jaws uniformly around the bit shank — the key's bevel gear engages holes around the chuck's circumference and the key handle provides the mechanical leverage to tighten the jaws to the clamping force needed for secure bit retention during drilling. Without the chuck key, bits cannot be changed in a keyed chuck — the chuck key is a required tool for every bit change on keyed chuck drills, making a replacement key immediately necessary when the original is lost or damaged.
The 3/8 in. specification refers to the chuck capacity that this key is designed for — the key's bevel gear tooth size and diameter are matched to the gear geometry of 3/8 in. keyed drill chucks specifically. Using a chuck key with incorrect bevel gear dimensions strips the chuck's engagement holes, damages the key's gear teeth, and prevents effective chuck tightening. Milwaukee builds the chuck key from quality steel for the durability needed through the many chuck-tightening cycles of professional use, and the T-handle provides the comfortable grip and mechanical advantage for applying adequate tightening force for secure bit retention in drilling applications. The chuck key should be removed from the chuck before starting the drill — operating a drill with the chuck key inserted is a serious safety hazard.
See Milwaukee's complete chuck and drill accessory lineup for all available chuck keys and for replacement chucks for Milwaukee corded drills and drill presses.
Features
- 3/8 in. chuck key for Milwaukee keyed 3/8 in. drill chucks — required for every bit change
- Bevel gear sized and matched to 3/8 in. chuck gear geometry for correct engagement
- Quality steel construction for durability through professional use tightening cycles
- T-handle provides comfortable grip and adequate tightening mechanical advantage
- Always remove from chuck before starting drill — serious safety hazard if left inserted
Specifications
- Chuck Capacity: 3/8 in.
- Type: Chuck Key (Bevel Gear)
- Compatible Tools: Milwaukee Drills with Keyed 3/8 in. Chuck
Includes
- (1) Milwaukee 48-66-3080 3/8 in. Chuck Key
