Lyndex-nikken 163-020 Hex Collet 5/16 Inch

Product Description

The LYNDEX-NIKKEN 163-020 is a hex collet designed to grip 5/16-inch hex shank tooling in CNC machining applications. With an overall length of 4.31 inches and a total indicator runout (TIR) of 0.0007 inches, this collet delivers the dimensional accuracy and repeatability that precision machining operations require. The internal thread is 1-11/16 inch-20 and the external thread is M47.5 x 1.75, allowing it to seat correctly in compatible collet chucks and toolholding systems. Machinists and toolroom technicians install this collet as part of a modular toolholding setup on vertical and horizontal machining centers.

This hex collet is suited for production machining environments where hex-shank tools such as nut drivers, hex drivers, or form tools need secure, repeatable holding. It is intended for use in toolholding systems that accept the M47.5 x 1.75 external thread specification. Typical applications include metal cutting operations on CNC machining centers in both job shop and high-volume production settings. Installation is performed by qualified machinists or toolroom personnel familiar with collet chuck assembly and torque procedures.

Key Features

• 5/16-inch hex bore size for positive engagement with hex-shank tooling
• TIR of 0.0007 inches supports precision and repeatability at the spindle
• Overall length of 4.31 inches provides adequate reach for standard toolholding setups
• Internal thread of 1-11/16 inch-20 and external thread of M47.5 x 1.75 for correct chuck seating
• Weighs 1.7 pounds, indicating robust construction suitable for production use

Compatibility

Designed for use in collet chuck systems that accept an M47.5 x 1.75 external thread interface and a 1-11/16 inch-20 internal thread, consistent with LYNDEX-NIKKEN modular toolholding platforms.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Before changing or seating the collet, power down the machine and confirm the spindle has come to a complete stop. Use the appropriate spanner wrench rated for the collet chuck system and follow the chuck manufacturer torque guidelines. Inspect the collet bore and chuck taper for chips or debris before assembly to protect seating accuracy and TIR.