Seco 02440238 Lock Screw TP15 Torx Plus M5 Milling

Product Description

The SECO 02440238 is a countersunk lock screw designed to secure indexable inserts in milling toolholders. It uses a TP15 Torx Plus drive and an M5 thread, providing reliable clamping force to keep cutting inserts seated properly during milling operations. The countersunk head profile keeps the screw flush with the toolholder pocket, reducing interference with chip flow. Installation requires a T15P-3 key driver. This screw is a consumable hardware component replaced during routine toolholder maintenance by machinists and CNC tooling technicians.

This lock screw is used in indexable milling applications where insert retention and precise seating are critical to tool life and surface finish. It is compatible with the 335.18 and R335.18 toolholder styles and accepts C05012-T15P insert style. Typical use is in production machining environments running face mills, shoulder mills, or similar indexable milling cutters where inserts are changed regularly and fastener integrity is essential to safe, consistent operation.

Key Features

• TP15 Torx Plus drive for positive engagement and reduced driver wear
• M5 thread size for compatibility with standard indexable milling toolholder pockets
• Countersunk head profile minimizes chip interference at the insert pocket
• Compatible with T15P-3 key driver for consistent torque application
• Designed for 335.18 and R335.18 toolholder styles
• Accepts C05012-T15P insert style

Compatibility

Compatible with 335.18 and R335.18 toolholder styles. Designed to secure C05012-T15P inserts. Also referenced under the complete insert compatibility series 335.18 1606. Requires T15P-3 key driver for installation.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and de-energize the machine spindle before changing inserts or replacing lock screws. Use only the specified T15P-3 Torx Plus key driver to seat the screw and avoid stripping the drive recess. Inspect the screw threads and toolholder pocket threads for damage before each insert change, and replace any worn or damaged screws immediately.