Kennametal 1543077 Cap Screw Indexables T20 Torx

Product Description

The KENNAMETAL 1543077 is a T20 Torx cap screw designed to secure indexable inserts and shims in milling and turning toolholders. This small-format fastener is a critical hardware component in indexable cutting tool assemblies, where consistent clamping force on carbide inserts directly affects cut quality, tool life, and dimensional accuracy. Weighing approximately 0.0033 pounds, it is a lightweight but precision-critical part. Licensed machinists, toolroom technicians, and CNC setup personnel install and replace these screws during routine insert indexing and toolholder maintenance.

This cap screw is used in indexable milling and turning applications where T20 Torx drive fasteners are specified by the toolholder design. It is also compatible with shim hardware within indexable toolholder assemblies. The T20 Torx drive reduces cam-out risk compared to hex drives, making it well suited for high-frequency insert changes in production environments. Minimum order quantity is 10 units; package quantity is 1.

Key Features

• T20 Torx drive reduces cam-out during insert change cycles
• Designed for indexable milling and turning toolholder assemblies
• Compatible with shim hardware in indexable tool systems
• Lightweight at 0.0033 pounds, precision-machined for consistent clamping
• Sold individually; minimum order quantity of 10 units applies

Compatibility

Designed as an OEM-style replacement cap screw for indexable milling and turning toolholders requiring a T20 Torx drive fastener, including assemblies that incorporate shim hardware.

Installation Notes

Cap screw replacement should be performed by a qualified machinist or toolroom technician. Always power down and lock out the machine spindle before removing or installing indexable hardware. Use a calibrated T20 Torx driver or key to seat the screw; never substitute a damaged or incorrect driver, as this can strip the screw head and damage the toolholder pocket. Replace cap screws at any sign of thread damage, galling, or deformation to maintain proper insert clamping integrity.