Seco 02440240 Indexable Insert Lock Screw T09P M3.5

Product Description

The SECO 02440240 is a countersunk lock screw designed to secure indexable inserts in milling toolholders. It features a T09P Torx Plus drive and an M3.5 thread, providing a precise, torque-resistant connection between the insert and the toolholder pocket. The countersunk head sits flush to maintain clearance during cutting operations. This hardware is a direct replacement component used by machinists and tooling technicians to restore clamping function when original screws are worn, stripped, or lost. Overall length is 3.40 millimeters, making it a compact, purpose-built fastener for indexable tooling systems.

This lock screw is intended for use in indexable milling applications where T09P Torx Plus drive and M3.5 thread specifications are required. It is typically installed during toolholder maintenance or insert changeover on CNC machining centers and manual milling machines. Shops running high-volume insert changes rely on stocked quantities of these screws to minimize downtime. This item is sold individually but carries a minimum order quantity of 10 units, making it appropriate for shop floor consumable stock.

Key Features

• T09P Torx Plus drive for positive engagement and reduced cam-out during tightening
• M3.5 thread size for compatibility with standard indexable milling toolholder insert pockets
• Countersunk head design sits flush to maintain chip clearance
• 3.40 millimeter overall length engineered for indexable insert clamping geometry
• Direct OEM-style replacement for worn or damaged insert lock screws

Compatibility

Designed as an OEM-style replacement lock screw for indexable milling toolholders requiring a T09P Torx Plus drive and M3.5 thread insert-compatible fastener. Manufacturers catalog number C93504-T09P.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Before replacing insert lock screws, ensure the machine spindle is powered down and the toolholder is secured in a vise or toolholder fixture. Use a calibrated T09P Torx Plus driver or torque wrench bit to seat the screw without overtightening, which can strip the thread or crack the insert. Follow the toolholder manufacturer's torque specification for the applicable insert pocket size.