ER Collet Nuts

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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 E R collet nuts from PwnCNC are the same ones we include in our spindle kits—and they’re now available individually for your convenience. 🛠️ Compatibility ER11A Collet Nuts — For 65mm spindle motors ER16-19M Collet Nuts — For 65mm and 80mm motors using ER16 Collets 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 🖤 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. Show more