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The LYNDEX-NIKKEN 340-032 is a square collet designed for precision workholding in milling and machining operations. It accepts a 0.5 inch square shank and features a 1.988 in-20 external thread for secure mounting in compatible collet chucks. With an overall length of 3.75 inches, this collet provides consistent clamping force and accurate part positioning. Weighing 1.67 pounds, it is built for demanding shop environments where repeatable tool holding is critical. Machinists and CNC operators install this collet as part of a toolholding system on vertical and horizontal machining centers.
This square collet is suited for use in production machining environments where square-shank tooling must be held with precision and rigidity. It is a direct-mount component that threads into a matching collet chuck body. Typical applications include end mill holding, specialty tooling setups, and any operation requiring a square bore collet with a 1.988 in-20 external thread interface. It is appropriate for both job shop and production floor use.
Designed as an OEM-style replacement or direct-fit component for square collet chuck systems requiring a 1.988 in-20 external thread and a 0.5 inch square bore.
Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholding system is de-energized before handling collets or chuck bodies. Thread the collet into the chuck body by hand first to confirm clean thread engagement before applying a torque wrench. Inspect the collet bore and mating chuck surfaces for contamination or wear before each use to maintain clamping accuracy.
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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