Alpha® Hex Wrench 31 mm for Twincur GEM & GEM-V
The Alpha® 31 mm Hex Wrench (Part No. 520000) is the OEM service tool for changing the spindle nut on Alpha® Twincur® GEM and GEM-V edge-polishing wheel adapters (EGV5SNL / EGV6SNL). The 31 mm hex matches the factory nut so the adapter can be removed and reinstalled without rounding flats or scoring the housing.
Features
- OEM 31 mm hex wrench specifically sized for Twincur GEM and GEM-V adapter nuts
- Required for installing or removing the EGV5SNL (5") and EGV6SNL (6") snail-lock adapters
- Heavy-gauge steel, approx. 12" long for sufficient leverage
- Single-piece tool — no moving parts to wear out
| Part No. | Size | Type | Recommended For | UPC | Country of Origin |
|---|---|---|---|---|---|
| 520000 | 31 mm | Hex Wrench | Alpha® Twincur GEM / GEM-V adapters | 749173462153 | China |
- Disconnect power and water from the edge-polishing machine before any service work.
- Engage the 31 mm hex over the spindle nut on the GEM / GEM-V adapter.
- Hold the spindle stationary using the machine spindle lock (or factory backup wrench).
- Turn the wrench to loosen or tighten the nut — do not use cheaters or pneumatic impact.
- Wipe the threads and the wrench clean of slurry after each use; store dry to prevent rust.
31 mm hex — Service wrench — 520000
| Part No. | 520000 |
| UPC | 749173462153 |
| Size | 31 mm hex |
| Type | Service wrench |
| Recommended For | Alpha® Twincur GEM & GEM-V adapter nuts (EGV5SNL / EGV6SNL) |
| Packaged Weight | 1.00 lbs |
| Package Dimensions | 12" x 1.5" x 0.5" |
| Country of Origin | China |
| Property | Detail |
|---|---|
| Hex Size | 31 mm |
| Approx. Length | 12" |
| Material | Steel |
| Intended Use | Service tool for Alpha® Twincur GEM / GEM-V adapter nut |
| Country of Origin | China |
What is this wrench used for?
It is the OEM service tool for tightening and loosening the 31 mm spindle nut on Alpha Twincur GEM and GEM-V snail-lock adapters (EGV5SNL and EGV6SNL).
Will this fit other Alpha machines?
It is specified for the GEM and GEM-V adapter nut. For other Alpha tools, check the service documentation for the correct wrench size.
Can I use an impact wrench with this?
No. Use hand torque only. Impact tools can damage the adapter housing and spindle threads.
No product-specific videos are currently available from the manufacturer or DST.
⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.













