ProSpin 10mm x 1.25 Prop Nut with 10mm Bushing (PN102)
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ProSpin 10mm x 1.25 Prop Nut with 10mm Bushing
The ProSpin 10mm x 1.25 Prop Nut with 10mm Bushing is a replacement mounting set for compatible ProSpin aluminum spinner installations. It includes a prop nut with a 10 mm diameter and 1.25 mm thread pitch, along with a matching 10 mm bushing.
This is the standard prop nut size supplied with ProSpin 4-1/2-inch and 5-inch spinners. It may also be used when replacing the standard nut on another compatible ProSpin spinner, provided the engine or motor has a 10 mm x 1.25 mm threaded propeller shaft.
✅ Product Highlights
- Replacement prop nut for compatible ProSpin spinner installations
- 10 mm metric thread diameter
- 1.25 mm thread pitch
- Includes a matching 10 mm bushing
- Standard prop nut size for 4-1/2-inch and 5-inch ProSpin spinners
- MPI Products part number PN102
📏 ProSpin Spinner and Standard Prop Nut Guide
The table below shows the standard prop nut normally supplied with each ProSpin aluminum spinner size. If your engine uses a different shaft thread, a separately purchased replacement prop nut may be required.
| ProSpin Spinner Size | Standard Prop Nut |
|---|---|
| 1-1/2 to 3-1/4 inches | 1/4"-28 |
| 3-1/2 to 4 inches | 5/16"-24 |
| 4-1/2 and 5 inches | 10 mm x 1.25 mm — This Model |
Understanding the 10mm x 1.25mm Size
- 10 mm: Nominal thread diameter
- 1.25 mm: Distance between the metric threads
- 10 mm bushing: Matching bushing supplied with the prop nut
Thread diameter alone does not determine compatibility. ProSpin also offers a 10 mm prop nut with a 1.0 mm thread pitch, so the pitch must be checked carefully before installation.
Compatibility
This replacement component is intended for ProSpin spinner installations that require a 10 mm x 1.25 mm prop nut and a 10 mm bushing. Engine and motor shaft specifications may vary, including between models from the same manufacturer.
- Compatible thread: 10 mm x 1.25 mm
- Included bushing size: 10 mm
- Standard fitment: ProSpin 4-1/2-inch and 5-inch spinners
- Not compatible with 10 mm x 1.0 mm shafts
- Not a universal-fit prop nut
- Spinner and propeller are not included
View Technical Specifications
| Brand: | ProSpin |
| Manufacturer: | MPI Products |
| Part Number: | PN102 |
| Component Type: | Spinner prop nut and bushing |
| Thread Diameter: | 10 mm |
| Thread Pitch: | 1.25 mm |
| Bushing Size: | 10 mm |
| Standard Spinner Sizes: | 4-1/2 and 5 inches |
Package Includes
- 1 x ProSpin 10mm x 1.25mm prop nut
- 1 x 10mm bushing
ProSpin spinner, propeller, engine, motor, and additional mounting hardware are not included.
💡 Modeler’s Tip
The correct prop nut should thread onto the shaft smoothly by hand. Never force the nut. If it binds immediately, stop and recheck the shaft diameter, thread pitch, and thread condition.
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