Seco 02546349 Lock Screw T08P Torx Plus M2.5 Milling Insert

Product Description

The SECO 02546349 is a countersunk lock screw designed to secure indexable inserts in milling toolholders. Manufactured with a Torx Plus drive socket sized T08P, it provides positive engagement during tightening and resists cam-out under cutting loads. The M2.5 thread pitch matches standard indexable milling bodies that call for this screw size. Replacement lock screws are a routine consumable in any milling operation — insert seats wear, screws strip or lose torque retention over time, and having correct replacements on hand keeps tooling changes fast. This part is sold individually but carries a minimum order quantity of 10 units per transaction.

This lock screw is used in indexable milling applications where inserts are clamped into a toolholder pocket via a central screw. It is suited for face mills, shoulder mills, and other indexable milling bodies that use an M2.5 countersunk lock screw with a T08P Torx Plus drive. Machinists and tooling technicians working in production or job-shop environments will keep multiples of this fastener on hand as part of standard toolholder maintenance stock.

Key Features

• T08P Torx Plus drive provides higher torque transfer and reduces drive socket wear compared to standard Torx
• M2.5 thread size matches common indexable milling toolholder insert seats
• Countersunk head design seats flush within the insert pocket for proper insert clamping
• 8.00 mm overall length suits standard indexable milling body screw boss depth
• Sold as single-piece quantity with a 10-piece minimum order for efficient stock replenishment

Compatibility

Designed as an OEM-style replacement lock screw for indexable milling toolholders requiring an M2.5 countersunk screw with a T08P Torx Plus drive. Also referenced under manufacturer catalog number C02508-T08P.

Installation Notes

Lock screw replacement is performed by tooling technicians or machinists during insert indexing or toolholder maintenance. Remove the worn or damaged screw using a calibrated T08P Torx Plus key — do not substitute a standard Torx driver, as this can round the drive lobes. Thread the new screw in by hand first to confirm proper engagement, then torque to the toolholder manufacturer's specified value using a torque key. Inspect the insert seat and pocket for chips or debris before seating the new insert and screw.