Product Description
**Milwaukee parts change not only by model# but also by serial number. Milwaukee's site lets you look up your tool's parts diagram. Enter Cat# and Select Service Parts. Also match Serial Number.
Milwaukee 1/4 in. Anvil Assembly
Model Number: 42-06-0051
The Milwaukee 42-06-0051 is a genuine OEM 1/4 in. Anvil Assembly for the 3048-20 M12 FUEL 1/4 in. Subcompact Impact Wrench. The anvil is the output drive of the impact mechanism: it is the 1/4 in. square drive that receives the rapid hammer blows from the impacting assembly and transmits them to the socket for high-torque fastening and nut-busting, which the 3048-20 delivers at up to 100 ft-lbs in a tool that weighs only about 1.5 lbs. This impact wrench uses friction-ring socket retention rather than a detent pin, so the anvil carries the friction ring that holds sockets on for quick, tool-free changes. Because the anvil takes the full impact load thousands of cycles per minute, the square drive and the socket-retention features wear, round off, or lose their grip over time. Replacing it with the genuine Milwaukee OEM anvil restores the correct square-drive dimensions and secure socket retention, where an off-spec anvil may round the drive or fail to hold sockets.
This anvil is identified at Reference 108 on the Milwaukee service parts list for the 3048-20 M12 FUEL 1/4 in. Subcompact Impact Wrench. It is supplied as an assembly that includes the anvil together with its o-ring and snap ring (retaining ring). It is specific to the 1/4 in. drive 3048-20; the companion 3/8 in. drive model, the 3049-20, uses a different, larger anvil, so match the drive size to your tool. The tool's friction ring (44-90-1070), the component that actually retains the socket, is not part of this assembly and is ordered separately; because the friction ring is the socket-retention wear part, plan to replace it at the same time as the anvil. Because Milwaukee specifies service parts by serial number as well as catalog number, verify your catalog and serial number against the official Milwaukee service parts diagram before ordering, since running production changes can alter part compatibility within the same catalog number.
Features
- Genuine Milwaukee OEM 1/4 in. anvil assembly
- For the 3048-20 M12 FUEL 1/4 in. Subcompact Impact Wrench
- The 1/4 in. square drive output of the impact mechanism
- Comes as an assembly with its o-ring and snap ring
- Transmits the hammer blows to the socket for high-torque fastening
- Supports the tool's up to 100 ft-lbs of nut-busting torque
- Uses friction-ring socket retention for quick, tool-free socket changes
- Reference 108 on the service parts diagram
- Specific to the 1/4 in. 3048-20; the 3/8 in. 3049-20 uses a different anvil
- Restores correct square-drive dimensions and secure socket retention
- Friction ring (44-90-1070), the socket-retention wear part, is sold separately
- Sold individually
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 42-06-0051
- Official Description: 1/4 in. Anvil Assembly
- Component Type: Impact wrench square-drive output anvil assembly
- Primary Fitment: Milwaukee 3048-20 M12 FUEL 1/4 in. Subcompact Impact Wrench
- Also Referenced On: Specific to the 1/4 in. drive 3048-20; the 3/8 in. 3049-20 uses a different anvil; verify by serial number
- Parts Diagram Position: Reference 108 (3048-20 service parts list)
- Quantity: Sold individually (1 anvil assembly with o-ring and snap ring)
- Part Type: Genuine Milwaukee OEM Replacement Part
Includes
- (1) 1/4 in. Square Drive Anvil
- (1) O-Ring
- (1) Snap Ring
The tool and the friction ring (44-90-1070) are NOT included and are sold separately. The friction ring is the socket-retention wear part, so replace it along with the anvil for reliable socket hold. Always verify by serial number using Milwaukee's online parts lookup before ordering.
