Kennametal 1016657 Tap Collet Double Angle Series K

Product Description

The KENNAMETAL 1016657 is a double angle tap collet in the K collet series, designed to securely hold hand taps during tapping operations on compatible toolholding systems. With a collet size of 0.48 inches and a square drive size of 0.36 inches, it provides a precise, repeatable grip for 5/8-inch hand taps. The total indicator runout (TIR) is rated at 0.001 inches (0.030 mm), supporting accurate thread cutting with minimal deflection. This collet does not include through-coolant capability or tension tap functionality. It is installed by machinists and toolroom professionals as part of a tapping chuck or toolholder assembly.

This collet is suited for hand tap applications in machining environments where consistent TIR and secure tap retention are required. The double angle collet design seats firmly in compatible K-series toolholders, making it appropriate for vertical machining centers, drill presses, and manual tapping heads used in production or maintenance machine shops. It accommodates a 5/8-inch hand tap and is sold individually.

Key Features

• Double angle collet design for secure seating in K-series toolholders
• Collet size: 0.48 inches to accept 5/8-inch hand taps
• Low TIR of 0.001 inches (0.030 mm) for accurate thread alignment
• Square drive size of 0.36 inches for positive tap engagement
• Hand tap configuration — no through-coolant or tension tap features
• Sold as a single unit (quantity of one per package)

Compatibility

Designed for use with K-series double angle tap collet toolholders that accept a 0.48-inch collet size. Compatible with 5/8-inch hand taps featuring a 0.36-inch square drive.

Installation Notes

Installation should be performed by a qualified machinist familiar with tapping chuck assemblies. Ensure the toolholder and spindle are fully de-energized and at a complete stop before inserting or removing the collet. Seat the collet fully into the toolholder body before tightening to ensure proper double angle contact and accurate TIR. Do not use this collet with pipe taps or tension-compression tapping heads unless confirmed compatible by the toolholder manufacturer.