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The SANDVIK COROMANT 5763406 is an ER32 collet nut designed to secure ER32-series collets in compatible tool holders. The collet nut threads onto the tool holder nose and applies clamping force to the collet, holding cutting tools at precise runout tolerances during milling, drilling, and reaming operations. At 0.29 pounds, it is a lightweight precision component machined to close tolerances. Machinists, toolroom technicians, and CNC setup personnel install and replace collet nuts as part of routine tooling maintenance or when thread wear or damage is detected.
This collet nut is used in CNC machining centers, manual mills, and drill presses equipped with ER32 collet chuck holders. ER32 is one of the most widely adopted collet series in general machining, found in both light-duty and production-level setups across job shops, aerospace, automotive, and metalworking facilities. It is sold individually, making it suitable as a direct replacement for a worn or damaged nut without requiring purchase of a full collet chuck assembly.
Designed as a replacement collet nut for ER32-series collet chuck holders. No specific compatible model numbers were provided in the product data.
Installation is performed by toolroom technicians or CNC operators during tooling setup or maintenance. Power down and lock out the machine spindle before removing or installing any tooling components. Use the appropriate ER32 collet nut spanner wrench to tighten to the tool holder manufacturer's recommended procedure - do not use pipe wrenches or improvised tools, as doing so can damage the nut's precision threads or hex flats. Inspect collet and holder seats for wear or contamination before reinstalling.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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