Sandvik Coromant 5907006 Threading Insert 12 Tpi Un

Product Description

The SANDVIK COROMANT 5907006 is a laydown threading insert from the CoroThread 266 series, designed for right-hand internal UN thread cutting at 12 threads per inch (TPI). Manufactured from solid carbide with a PVD-applied TiCrAlN/TiN coating, this insert delivers a 60-degree included angle and a single tooth per side geometry suited to precision threading operations. The 3/8-inch inscribed circle and 5/32-inch thickness place it in the mid-range insert size category. It is installed and replaced by machinists and CNC tooling technicians working on turning centers and thread-cutting lathes.

This insert is intended for internal UN threading applications in ferrous and non-ferrous materials where consistent thread form and surface finish are required. The CoroThread 266 system is used in production and job-shop environments for generating unified national threads on bores and internal features. The C chipbreaker designation suits a range of cutting depths appropriate to the 12 TPI pitch. Typical applications include threading hydraulic fittings, valve bodies, pipe couplings, and similar internally threaded components requiring UN thread profiles.

Key Features

• Solid carbide substrate with PVD TiCrAlN/TiN coating for wear resistance and edge integrity
• Right-hand internal UN thread form at 12 TPI with a 60-degree included angle
• 3/8-inch (9.53 mm) inscribed circle and 5/32-inch (3.97 mm) thickness for CoroThread 266 toolholders
• C chipbreaker geometry optimized for controlled chip formation on internal threading passes
• Single tooth per side design for accurate thread profile tracking
• Part of the CoroThread 266 series, compatible with the corresponding indexable insert toolholder system

Compatibility

Designed for use in SANDVIK COROMANT CoroThread 266 series toolholders accepting insert size code 16 with a 0.1732-inch (4.40 mm) hole diameter. Consult the CoroThread 266 system documentation to confirm correct toolholder and clamping screw pairing before installation.

Installation Notes

Installation is performed by trained machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct Torx or clamping key specified for the CoroThread 266 toolholder — do not use substitute tools that may damage the insert seat or clamping screw. Inspect the insert pocket and clamping surfaces for debris or wear before seating the new insert.