Kennametal 3400552 Cap Screw TP15 Torx Plus M3.5x0.6

Product Description

The KENNAMETAL 3400552 is a cap screw designed for securing indexable inserts in cutting tool assemblies. It features a flat head with a TP15 Torx Plus drive, an M3.5x0.6 thread, and is built for repeatable, torque-controlled clamping. This type of fastener is a consumable maintenance item in CNC and manual turning operations, replaced during insert indexing or when threads show wear. The TP15 Torx Plus drive reduces cam-out risk compared to standard hex drives, which matters when tightening into carbide tool bodies at the bench or at the machine. Machinists and toolroom technicians typically stock these in multiples.

This cap screw is specified for plunge turning applications and is compatible with insert-style indexable toolholders that accept an M3.5x0.6 thread fastener. It is used in production machining environments where insert retention hardware must be replaced on a routine basis to maintain consistent clamping force and avoid damage to the tool body seat. The key and driver compatibility includes DT15IP and THW2M drivers. This screw is sold individually but carries a minimum order quantity of 10 units, making it suited for stocking in toolroom consumable bins.

Key Features

• TP15 Torx Plus flat-head drive reduces cam-out during tightening
• M3.5x0.6 thread size for use with compatible indexable toolholders
• Designed for plunge turning insert retention applications
• Compatible with DT15IP and THW2M drivers
• Sold as individual units with a minimum order quantity of 10

Compatibility

Designed for use with indexable insert toolholders requiring an M3.5x0.6 thread cap screw and a TP15 Torx Plus drive. Compatible drivers include DT15IP and THW2M. Specified for plunge turning indexable tool types.

Installation Notes

Installation should be performed by a machinist or toolroom technician familiar with indexable toolholder maintenance. Power down and de-energize the machine before servicing any cutting tool assembly. Use only the specified TP15 Torx Plus driver to avoid rounding the drive recess or damaging the tool body. Do not reuse cap screws that show thread damage or deformation, as compromised fasteners can lead to insert movement during cutting.