Seco 02440266 Lock Screw TP15 M4 Milling Indexable

Product Description

The SECO 02440266 is a countersunk lock screw designed to secure indexable inserts in milling toolholders. It uses a Torx Plus TP15 drive and M4 thread to clamp inserts firmly during cutting operations. The countersunk head seats flush against the insert, reducing interference with chip flow and maintaining accurate insert positioning. Installation and removal require a T15P-3 key driver. This screw is a critical hardware component in indexable milling setups and is typically serviced by machinists and CNC tooling technicians during insert changes or toolholder maintenance.

This lock screw is intended for use in milling applications with indexable toolholders. It is compatible with the 335.19 toolholder style and is designed to secure inserts during face milling, shoulder milling, and related operations. The M4 thread size is standard across a range of SECO indexable toolholder platforms. At 7.90 mm overall length, the screw fits within the clamping pocket geometry of compatible holders without protruding. Sold individually per package, with a minimum order quantity of 10 units, making it practical to stock as a consumable alongside inserts.

Key Features

• Torx Plus TP15 drive for high torque transfer and reduced driver wear during insert changes
• M4 thread size for use with compatible indexable milling toolholders
• Countersunk head design seats flush to minimize interference with cutting geometry
• 7.90 mm overall length sized for 335.19 toolholder style clamping pockets
• Compatible with T15P-3 key driver for precise torque application
• Sold as a consumable replacement component, orderable in multiples of 10

Compatibility

Compatible with 335.19 toolholder style and designed to secure indexable inserts including the SNHQ 1205 insert style (C94008-T15P). Requires T15P-3 key driver for installation and removal.

Installation Notes

Lock screw replacement and insert changes on indexable milling toolholders should be performed by qualified machinists or tooling technicians. Always ensure the machine spindle is fully stopped and locked out before accessing the toolholder. Use only the correct T15P-3 Torx Plus driver to avoid stripping the drive recess. Do not reuse visibly damaged or stripped lock screws, as compromised fasteners can result in insert ejection during cutting.