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 Spacer Bushing — 18 Ga and 14 Ga Double Shear Head
Model Number: 42-40-0521
The Milwaukee 42-40-0521 is a genuine OEM Spacer Bushing for the 18 Ga. and 14 Ga. Double Shear Head on compatible Milwaukee shear tools. The spacer bushing is a precision machined sleeve component that fits within the double shear head assembly — establishing the correct axial spacing and alignment between the cutting blade components, the shear head body, and the drive mechanism. In double-action shear heads, precise blade spacing is critical to clean, accurate cutting without blade binding or excessive cutting force. The bushing also provides a smooth bearing surface for rotating or sliding components within the shear head. A worn, cracked, or damaged bushing that introduces misalignment or excessive play into the shear head assembly requires replacement to restore accurate cutting performance.
Using a genuine Milwaukee OEM spacer bushing ensures the correct inner diameter, outer diameter, and length for the shear head assembly it serves. Always verify your catalog number and serial number on Milwaukee's website before ordering to confirm this is the correct bushing for your specific unit.
Features
- Genuine Milwaukee OEM spacer bushing for the 18 Ga. and 14 Ga. Double Shear Head
- Establishes correct axial spacing and alignment between shear head cutting components
- Provides a smooth bearing surface for rotating and sliding components in the shear head
- Precise blade spacing is critical for clean, accurate cutting without blade binding
- Verify catalog number and serial number on Milwaukee's website before ordering
Specifications
- Type: Spacer Bushing
- Compatible Application: 18 Ga. and 14 Ga. Double Shear Head Assemblies
- Application: Axial Spacing and Bearing Surface in Double Shear Head
- Compatibility: Always verify part compatibility using your tool's model and serial number before ordering
Includes
- (1) Milwaukee 42-40-0521 Spacer Bushing — 18 Ga. and 14 Ga. Double Shear Head
