Seco 00018925 Differential Screw 5/16-24 Thread Indexables

Product Description

The SECO 00018925 is a differential screw designed for indexable turning toolholders. Differential screws use opposing thread pitches on each end to create a precise clamping force that secures the insert firmly against the toolholder pocket. The 00018925 features a 5/16-24 thread size, an overall length of 1.12 inches, a right-hand thread length of 0.47 inches, and a left-hand thread length of 0.41 inches. It is compatible with CL-9 clamps. Machinists and toolroom technicians install this screw as a replacement or spare when maintaining indexable turning setups on CNC or manual lathes.

This differential screw is used in indexable turning applications where reliable insert clamping is required. It is suited for production turning environments, maintenance shops, and toolcrib operations. The screw mates with the CL-9 clamp style, making it a direct service component for toolholders that rely on this clamping system. Industry standard number 18925 allows cross-referencing with tooling catalogs for verification before ordering.

Key Features

• 5/16-24 thread size for use with CL-9 clamp-style indexable turning holders
• Overall length of 1.12 inches with 0.47-inch right-hand thread and 0.41-inch left-hand thread
• Differential thread design generates controlled clamping force on indexable insert
• Industry standard number 18925 for catalog cross-reference verification
• Sold individually; minimum order quantity is 10 units

Compatibility

Designed for use with CL-9 clamp-compatible indexable turning toolholders requiring a 5/16-24 differential screw. Cross-references to industry standard number 18925.

Installation Notes

Differential screws should be installed and removed using the correct hex key to avoid rounding the drive socket. Always index or replace the insert before reinstalling the clamp screw, and ensure the clamping surface is clean and free of chips. Do not overtighten — differential screw designs are engineered to reach proper clamp force at the specified seating point. Keep spare screws on hand, as these are high-wear consumable components in active turning operations.