Kennametal 1016592 Tap Collet Series K 0.429 Inch

Product Description

The KENNAMETAL 1016592 is a double angle tap collet designed for secure tap holding in CNC tapping heads and rigid tapping applications. Built to Series K specifications, this collet accepts a 0.429 inch bore diameter and is sized for 9/16 inch hand taps. It features a Total Indicator Runout (TIR) of 0.001 inch (0.0300 mm), supporting accurate tap alignment and reduced thread-form error. The square drive size measures 0.322 inch. This collet is installed by machinists and toolroom technicians working with K-series tap holders on manual or CNC machine tools.

This collet is suited for hand tap applications in production and job-shop environments. The double angle collet design provides a secure grip and consistent tap positioning across threading cycles. It does not support through-coolant delivery and is not configured for tension-compression tapping — it is intended for rigid tapping setups using hand taps in the 9/16 inch size range. Typical applications include threading ferrous and non-ferrous workpieces on vertical machining centers, knee mills, and dedicated tapping machines equipped with K-series collet holders.

Key Features

• Double angle collet design for secure, repeatable tap retention
• Series K collet for direct fitment in K-series tap holders
• 0.429 inch bore diameter sized for 9/16 inch hand taps
• TIR of 0.001 inch (0.0300 mm) for accurate tap alignment
• 0.322 inch square drive size for positive tap engagement
• Rigid tapping configuration — no tension or through-coolant features

Compatibility

Designed for use with K-series double angle tap collet holders accepting a 0.429 inch collet bore and 9/16 inch hand taps. Verify holder series and bore diameter before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before inserting or removing the collet from the tap holder. Ensure the collet bore and holder taper are clean and free of chips or coolant residue before assembly. Do not use this collet with tension-compression holders or through-coolant systems, as it is not designed for those configurations.