Seco 02440215 Indexable Lock Screw T7P Torx Plus M2.5x0.45

Product Description

The SECO 02440215 is a countersunk lock screw designed to secure indexable inserts in threading toolholders. It uses a T7P Torx Plus drive, which provides superior torque transfer and reduces cam-out compared to standard Torx drives. The M2.5x0.45 thread engages insert clamping pockets precisely, keeping inserts seated under the cutting forces typical in threading operations. This screw is a small but critical component — an improperly seated or worn lock screw can cause insert shift, poor thread quality, and accelerated toolholder wear. It is installed by machinists and toolroom technicians maintaining indexable tooling assemblies.

This lock screw is used in indexable threading toolholders that accept the C02506-T07P insert style and 187R insert size. It is suited to both production machining environments and job shops running threading cycles on lathes and turning centers. The countersunk head profile sits flush within the toolholder pocket, keeping the clamping surface unobstructed. Technicians performing routine insert changes on threading tooling will typically keep a supply of these screws on hand, as they are wear items that should be inspected and replaced at regular intervals alongside insert changes.

Key Features

• T7P Torx Plus drive provides high torque transfer and reduces cam-out during insert clamping
• M2.5x0.45 thread size engineered for precision fit in indexable toolholder clamping pockets
• Countersunk head design sits flush with the toolholder seating surface
• Compatible with C02506-T07P insert style and 187R insert size
• Lightweight at 0.01 pounds — suitable for high-quantity stock in toolroom inventory

Compatibility

Designed for use with indexable threading toolholders accepting C02506-T07P insert style and 187R insert size with an M2.5x0.45 clamping screw pocket.

Installation Notes

Lock screws for indexable tooling are installed and removed by qualified machinists or toolroom technicians using the correct T7P Torx Plus key. Always use the manufacturer-specified Torx Plus key rather than a standard Torx driver to avoid rounding the drive recess. Inspect the screw threads and head seating surface for wear or damage before each insert change, and replace the screw if any deformation is present. Do not use thread lubricants or adhesives unless specifically called out in the toolholder manufacturer documentation.