Seco 02501798 Lock Screw TP7 Torx Plus M2.5 Thread

Product Description

The SECO 02501798 is a countersunk lock screw designed to secure indexable inserts in toolholders and boring bars used in metal cutting operations. It features an M2.5 thread size and a TP7 Torx Plus drive, which delivers precise torque transfer and reduces the risk of cam-out during tightening. At 4.70 mm overall length, the screw is sized for compact insert pockets common in turning, milling, and grooving tooling. Installation and replacement are performed by machinists and tooling technicians on CNC and manual machine tool setups.

This lock screw is used wherever SECO indexable tooling requires a TP7 Torx Plus drive insert-clamping screw. Typical applications include production turning centers, machining centers, and manual lathes running carbide or ceramic indexable inserts. The M2.5 thread is a standard pitch specification found across a wide range of indexable toolholder bodies. Sold individually, this screw ships with a minimum order quantity of 10 units, making it suitable for stocking in toolcrib and maintenance environments where screw loss or wear is routine.

Key Features

• TP7 Torx Plus drive reduces cam-out risk and extends driver bit life
• M2.5 thread size matches standard indexable toolholder insert pockets
• Countersunk head design seats flush within the insert pocket recess
• 4.70 mm overall length sized for compact indexable insert clamping geometry
• OEM replacement screw for SECO indexable tooling systems

Compatibility

Designed as an OEM-style replacement lock screw compatible with indexable toolholders requiring an M2.5 thread and TP7 Torx Plus drive. No specific model numbers were provided in the input data.

Installation Notes

Installation is performed by a machinist or toolroom technician. Ensure the machine is powered down and the spindle is locked before servicing any toolholder. Use a calibrated TP7 Torx Plus driver or torque wrench bit to seat the screw; do not substitute a standard Torx driver, as Torx Plus and Torx drive geometries are not interchangeable. Inspect the thread engagement in the toolholder pocket before torquing to avoid cross-threading.