4″ 3 JAW 3 HOLE M39 BACKPLATE (3900-3215) (SKU: 3900-3215)
4″ 3-Jaw 3 Hole M39 Backplate
- Fits most plain back chucks but may need to be machined for concentricity
- Made of high grade casting steel
- Assembly instructions included
Specifications
- 4″ 3-Jaw 3 Hole M39 Backplate
- Fits most plain back chucks but may need to be machined for concentricity.
- Made of high grade casting steel.
- Assembly instructions included.
- Weight: 2.1
- Dimensions: L 6, W 6, H 6
Benefits
- Industrial-grade tooling designed for dependable shop performance.
- Supports consistent results when applied with correct setup practices.
- A practical choice for U.S. machine shops and maintenance work.
Recommended use
- Confirm compatibility (size, interface, machine capacity) before ordering.
- Follow safe operating practices and use appropriate PPE.
- Optimize setup rigidity and process parameters for best results.
USA Warehouse Stock — Fast U.S. fulfillment.









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