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The LYNDEX-NIKKEN 330-064 is a hex collet designed for precision workholding in CNC machining and toolholding applications. It accepts a 1-inch hex shank and features a 1.988-20 external thread for secure engagement with compatible collet chucks and toolholding bodies. With an overall length of 3-3/4 inches, this collet provides consistent grip and accurate tool positioning during milling, drilling, or turning operations. It is installed by machinists and CNC setup technicians in production and job-shop environments where hex-shank toolholding is required.
This hex collet is suited for use in CNC machining centers and manual mills where hex-shank toolholding systems are employed. It is appropriate for both production runs and precision one-off setups requiring repeatable tool positioning. The 1.988-20 external thread specification ensures proper fitment with compatible collet chucks rated for this thread standard. Typical applications include milling and drilling operations where anti-rotation hex geometry provides an advantage over round-shank collets.
Designed as an OEM-style replacement or direct-fit collet for toolholding systems accepting a 1.988-20 external thread and 1-inch hex shank collets.
Installation should be performed by a qualified machinist or CNC technician. Ensure the spindle is fully stopped and the machine is powered down before changing collets. Inspect the collet chuck bore and collet threads for debris or damage before installation. Use the appropriate torque wrench and collet nut spanner to seat the collet properly - do not over-tighten by hand or with improvised tools.
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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