Lyndex-nikken 500-059 5C Collet 59/64 Inch Round

Product Description

The LYNDEX-NIKKEN 500-059 is a 5C round collet machined from steel for precision workholding in CNC lathes, screw machines, and manual turning equipment that accept the 5C collet standard. Sized at 59/64 inch, it holds round stock with a TIR of 0.0015 inches, delivering the concentricity required for tight-tolerance turning and grinding operations. The internal thread measures 1.041 inches at 24 threads per inch, and the external thread measures 1.238 inches at 20 threads per inch. Machinists and tool-room technicians install this collet when holding round bar, rod, or finished workpieces that demand repeatable, low-runout clamping without the bulk of a chuck setup.

This collet is suited for production turning, second-operation work, and precision grinding applications where a 5C spindle nose or collet closer is already in use. It fits both manual and CNC equipment equipped with a 5C-compatible spindle. The 59/64 inch bore size accommodates round stock at that diameter in residential shop, job-shop, and production-floor environments alike. The steel construction handles the clamping loads and wear cycles typical in repetitive production runs.

Key Features

• 59/64 inch bore diameter for round stock workholding
• TIR of 0.0015 inches for consistent concentricity across production runs
• Internal thread: 1.041 inches-24 for standard 5C collet closer engagement
• External thread: 1.238 inches-20 for proper spindle retention
• Head diameter of 1.485 inches fits standard 5C collet pockets
• Steel construction for durability under repeated clamping cycles

Compatibility

Designed as an OEM-style replacement and standard fitment for machine tools equipped with a 5C collet spindle nose or 5C collet closer.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the spindle drive before inserting or removing the collet. Inspect the collet pocket and closer threads for chips or damage before seating the collet, as contamination directly affects runout. Do not exceed the rated bore size by attempting to spring the collet beyond its designed capacity.