Lyndex-nikken 164-040 Square Collet 5/8 Inch

Product Description

The LYNDEX-NIKKEN 164-040 is a square collet designed to hold square-shank tooling in compatible collet chuck systems. It accepts a 5/8 inch square shank and features a 1-11/16 inch-20 internal thread with an M47.5 x 1.75 external thread for secure mounting. The overall length is 4.31 inches, and the total indicator runout (TIR) is rated at 0.0011 inches, providing the tight concentricity tolerances required for precision machining operations. This collet is installed by machinists and toolroom technicians on CNC and manual machine tool setups where square-drive tooling is required.

Square collets of this type are used in milling, tapping, and specialty toolholding applications where a square shank must be driven without slipping. The 164-040 fits collet chuck bodies that accept M47.5 x 1.75 external thread engagement, making it appropriate for mid-size machine tool spindles in production and job-shop environments. It is suited for both horizontal and vertical machining center setups requiring repeatable, low-runout square shank retention.

Key Features

• 5/8 inch square shank capacity for square-drive tooling retention
• TIR of 0.0011 inches for precise, low-runout performance
• 1-11/16 inch-20 internal thread for collet chuck body engagement
• M47.5 x 1.75 external thread for spindle or chuck interface
• 4.31 inch overall length suits standard toolholding depth requirements

Compatibility

Designed for use with collet chuck systems that accept M47.5 x 1.75 external thread and 1-11/16 inch-20 internal thread interfaces requiring a 5/8 inch square collet.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the tool is properly de-energized before changing collets. Clean all mating threads and collet surfaces before assembly to avoid seating errors that can increase runout. Torque the collet chuck nut according to the chuck manufacturer specifications, not estimated values.