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🔩 Extra Collet Nuts for Your Spindle
Stay ready with spares. Keep carving with confidence.
Need a backup or a direct replacement for your spindle’s collet nut? These high-quality ER collet nuts from PwnCNC are the same ones we include in our spindle kits—and they’re now available individually for your convenience.
🛠️ Compatibility
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ER11A Collet Nuts — For 65mm spindle motors
* Note, due to a manufacturing mistake, our silver ER11 nuts were labeled as ER20. We have discounted them until they're gone. -
ER20A Collet Nuts — For 80mm spindle motors
⚠️ Not compatible with ISO20 ATC systems.
If you’re running an ATC setup, you’ll want ISO20 Tool Holders instead.
🧰 Available Options
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🖤 Black Collet Nuts
• Balanced to 14,000 RPM
• Ideal for woodworking, acrylic, and general-purpose CNC use -
🪙 Silver Collet Nuts
• Balanced to 18,000 RPM
• Perfect for metalworking and high-speed, high-precision jobs
• These are the same nuts featured in our High-Precision ER Collet Sets
🔍 Want to Learn More?
Check out our Knowledge Base Guide on ER Collets to understand sizing, compatibility, and performance tips.
Whether you're replacing a damaged nut or building a full tooling kit, having extras on hand keeps your CNC projects running smoothly.
