Kennametal 1021339 Indexable Insert Cap Screw T7 Torx

Product Description

The KENNAMETAL 1021339 is a T7 Torx cap screw designed to secure indexable inserts on milling and turning toolholders. This small-format fastener is a critical hardware component in indexable tooling systems, where insert clamping integrity directly affects cut stability, runout, and insert seating. The T7 Torx drive provides positive engagement with reduced cam-out risk compared to hex drives, which matters in tight toolholder pockets where access and torque control are limited. At 0.0004 pounds, the screw is sized for precision indexable toolholder applications and is sold individually with a minimum order quantity of 10 units.

This cap screw fits indexable milling and turning toolholders that use the T7 Torx insert-clamping screw standard. It is a direct replacement or maintenance consumable for shops running indexable insert tooling on CNC lathes, machining centers, and manual turning setups. Machinists, tool crib personnel, and CNC setup technicians typically keep these on hand to replace worn or stripped clamping screws during insert changes. Losing a clamping screw mid-run is a common cause of unplanned downtime, making stocking the correct size essential for production environments.

Key Features

• T7 Torx drive for positive engagement and reduced cam-out during insert clamping
• Compatible with indexable insert toolholders used in milling and turning applications
• Cap screw style designed for flush or recessed seating in toolholder insert pockets
• Sold individually; minimum order quantity of 10 units for efficient stocking
• Lightweight at 0.0004 pounds, precision-sized for indexable tooling hardware

Compatibility

Designed for use with indexable insert toolholders requiring a T7 Torx cap screw for insert clamping, applicable to milling and turning tool types.

Installation Notes

Insert clamping screws should be installed and removed by a qualified machinist or tooling technician using a calibrated T7 Torx driver. Always ensure the toolholder pocket and insert seating surface are clean and free of chips before seating the insert and torquing the screw. Do not use impact drivers or makeshift tools, as this can strip the Torx recess or damage toolholder threads. Follow the toolholder manufacturer's recommended clamping procedure for insert changes.