Lyndex-nikken 340-048 Square Collet 3/4 Inch 1.988-20 Thread

Product Description

The LYNDEX-NIKKEN 340-048 is a square collet designed to grip square-profile workpieces and tooling in compatible collet chucks and toolholding systems. With a 3/4 inch square bore, a 1.988-20 external thread, and an overall length of 3-3/4 inches, this collet provides precise, repeatable clamping force for machining operations. It is used in CNC machining centers, lathes, and manual mills where square shank tooling must be held securely. Installation and setup are typically handled by machinists and toolroom personnel working in production or job-shop environments.

This square collet suits applications where standard round collets are insufficient for holding square-shank end mills, taps, or form tools. The 1.988-20 external thread interfaces with compatible collet chuck bodies designed for that thread specification. Typical use cases include light to medium milling, tapping, and toolholding setups in both production and prototype machining environments. The 3/4 inch size accommodates a common square shank dimension found in general metalworking tooling.

Key Features

• 3/4 inch square bore for gripping square-profile shank tooling
• 1.988 inch-20 external thread for engagement with compatible collet chuck bodies
• 3-3/4 inch overall length provides extended reach and stability in the chuck
• Precision-ground collet design supports accurate, repeatable tool positioning
• Package quantity of 1 for straightforward single-unit procurement

Compatibility

Designed for use with collet chuck bodies that accept a 1.988-20 external thread specification. Verify thread form and chuck body compatibility before installation. No specific model numbers were provided in the product data.

Installation Notes

Square collets are installed and removed by qualified machinists following standard toolholding procedures for the chuck system in use. Always power down and lock out the machine spindle before changing collets. Use the appropriate spanner wrench for the collet nut - do not use improvised tools that could damage the thread or collet seat. Inspect the collet bore and chuck body seat for chips or damage before assembly to ensure accurate seating and clamping force.