Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukees website please click here:
Milwaukee Lock Off Button Spring
Model Number: 40-50-0665
The Milwaukee 40-50-0665 is a genuine OEM Lock Off Button Spring for use in compatible Milwaukee tools. The lock off button spring provides the return force for the tool's lock off safety button — the spring that pushes the lock off button back to its locked position after the operator releases it, preventing the tool's trigger from being depressed until the operator deliberately actuates the lock off button again. This automatic return to the locked state is a critical safety function: the lock off mechanism prevents accidental tool activation when the tool is set down, carried, or handled with the trigger inadvertently contacted. A fatigued, broken, or missing lock off button spring that fails to return the button to its locked position after release requires replacement to restore correct lock off safety function.
Using a genuine Milwaukee OEM lock off button spring ensures the correct spring rate and geometry for the lock off mechanism it serves. Always verify your catalog number and serial number on Milwaukee's website before ordering to confirm this is the correct spring for your specific unit.
Features
- Genuine Milwaukee OEM lock off button spring for compatible Milwaukee tools
- Returns the lock off button to locked position after release to prevent accidental activation
- Critical safety function — a non-returning lock off button allows accidental trigger engagement
- Replacement restores correct lock off safety when original spring fatigues or breaks
- Verify catalog number and serial number on Milwaukee's website before ordering
Specifications
- Type: Lock Off Button Spring
- Application: Safety Lock Off Button Return Spring for Compatible Milwaukee Tools
- Compatibility: Always verify part compatibility using your tool's model and serial number before ordering
Includes
- (1) Milwaukee 40-50-0665 Lock Off Button Spring
