Seco 00040286 Lock Screw Indexable Milling TP10 M3.5

Product Description

The SECO 00040286 is a countersunk lock screw designed to secure indexable inserts in milling toolholders. Using a TP10 Torx Plus drive, it threads into M3.5 insert-clamping holes and holds cutting inserts firmly during machining operations. The overall length is 6.70 millimeters. This screw is a consumable hardware component — machined precisely to maintain correct insert seating, cutting geometry, and edge repeatability at the toolholder pocket. It is appropriate for use in CNC milling applications where insert retention integrity is critical to surface finish and dimensional accuracy.

This lock screw is suited to milling applications using indexable insert toolholders with M3.5 threaded insert-retention holes. It is compatible with Insert Style C03507 indexable inserts. The TP10 Torx Plus drive reduces cam-out risk during tightening, which is particularly important in high-volume production environments where screws are replaced frequently. Machinists, toolroom technicians, and CNC setup operators typically handle installation of these components during insert indexing or replacement.

Key Features

• TP10 Torx Plus drive reduces cam-out and driver wear during insert changes
• M3.5 thread size for indexable milling toolholder insert pockets
• Countersunk head style seats flush for correct insert clamping geometry
• 6.70 millimeter overall length matches standard insert-retention pocket depth
• Compatible with Insert Style C03507 indexable inserts
• Sold individually; minimum order quantity is 10 units

Compatibility

Compatible with indexable milling toolholders requiring M3.5 threaded lock screws and Insert Style C03507 inserts. UNSPSC Code 31161500.

Installation Notes

Lock screw replacement is performed by machinists and toolroom technicians during routine insert indexing or toolholder servicing. Always use a properly sized TP10 Torx Plus key to avoid stripping the drive recess. Do not over-tighten — follow the toolholder manufacturer torque specification for the given thread size and material. Inspect the threaded pocket in the toolholder for damage or contamination before installing a new screw.