Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukee's website please click here:
Milwaukee Lock-On Button
Model Number: 42-42-0147
The Milwaukee 42-42-0147 is a genuine OEM Lock-On Button for the 2881-20 M18 FUEL 4-1/2 in. / 5 in. Angle Grinder. The lock-on button is the control that holds the grinder's paddle switch in the engaged, running position, so the operator can run the tool continuously without having to keep the paddle depressed by hand. This is a genuine convenience feature on grinders used for extended grinding, cutting, or surface-prep passes, where holding the paddle down for long stretches causes hand fatigue. It is important not to confuse a lock-on button with a lock-out button: a lock-on button, like this part, keeps the switch engaged for continuous operation, whereas a lock-out button is a safety interlock that prevents accidental startup. Because the lock-on button is actuated by hand and is a molded component exposed on the tool, it is a wear and breakage item: when it is cracked, stuck, or broken, the lock-on function may fail to engage or fail to release. Replacing it with the correct genuine Milwaukee OEM button restores proper lock-on operation.
Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, always verify your tool's serial number against the official Milwaukee service parts diagram before placing your order, since running production changes can alter part compatibility within the same catalog number. This lock-on button is specified for the 2881-20 M18 FUEL Angle Grinder, so confirm your tool's catalog and serial number against the parts diagram before ordering. The paddle switch, the electrical switch, the return spring, and any related components that work with the lock-on button are separate parts that vary by tool, so refer to your tool's parts diagram for the correct companion part numbers, and inspect the paddle and switch when replacing the button since these parts work together.
Features
- Genuine Milwaukee OEM service part, not an aftermarket substitute
- Lock-On Button for the 2881-20 M18 FUEL 4-1/2 in. / 5 in. Angle Grinder
- Holds the paddle switch engaged for continuous operation
- Lets the operator run the grinder without holding the paddle down
- Reduces hand fatigue on extended grinding and cutting passes
- A lock-on button, distinct from a safety lock-out button
- Restores proper lock-on operation when the original is cracked or stuck
- Common wear and breakage item, actuated by hand
- Manufactured to Milwaukee specification for correct fit and function
- Specific to the 2881-20, so verify fitment on the diagram
- Paddle switch, electrical switch, and spring are separate parts, sold separately
- Verify catalog number and serial number before ordering
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 42-42-0147
- Official Description: Lock-On Button
- Component Type: Paddle switch lock-on button
- Function: Holds the paddle switch engaged for continuous running
- Primary Fitment: 2881-20 M18 FUEL 4-1/2 in. / 5 in. Angle Grinder
- Also Referenced On: Verify additional applications using Milwaukee's online parts lookup
- Parts Diagram Position: Verify the figure and bulletin number on Milwaukee's online parts lookup
- Quantity: Sold individually, (1) required per tool
- Part Type: Genuine Milwaukee OEM Replacement Part
Includes
- (1) Milwaukee 42-42-0147 Lock-On Button
The paddle switch, electrical switch, return spring, and related components that work with the lock-on button are NOT included, vary by tool, and are sold separately - refer to your tool's parts diagram for the correct part numbers and quantities. Always verify by serial number using Milwaukee's online parts lookup before ordering.
