Seco 00077915 Threading Insert 14 Tpi Un Solid Carbide

Product Description

The SECO 00077915 is a laydown threading insert designed for external UN thread cutting at 14 threads per inch. Manufactured from solid carbide with a PVD-applied TiAlN/TiN coating, this insert carries the CP500 manufacturer grade and is optimized for right-hand threading operations. The 16ER insert style features a 60-degree included angle standard to UN thread profiles, a 9.53 mm inscribed circle, and a thickness of 3.47 mm (0.1366 inches). The A2 chipbreaker geometry makes it well-suited for threading stainless steel workpieces. Machinists and toolroom professionals install this insert into compatible 16ER-series toolholders for precision thread-turning applications.

This insert is intended for external threading on CNC lathes and manual turning centers where UN-standard thread profiles are required. Its primary workpiece material rating is stainless steel (ISO material code M), making it a practical choice for aerospace, medical, and industrial fastener applications. The Snap Tap series designation indicates compatibility with indexable threading toolholder systems that accept the 16ER insert style. The PVD coating process preserves sharp cutting edges while extending tool life in demanding threading passes.

Key Features

• Solid carbide substrate with PVD TiAlN/TiN coating for wear resistance on stainless steel
• 14 TPI UN external thread profile with 60-degree included angle
• CP500 manufacturer grade optimized for ISO M-group workpiece materials
• A2 chipbreaker geometry for controlled chip formation during threading
• Right-hand cutting orientation for standard external threading operations
• Conforms to ISO standards; part of the SECO Snap Tap series

Compatibility

Designed for use in 16ER-style indexable threading toolholders that accept the Snap Tap insert series. Suitable for external UN thread cutting at 14 TPI on stainless steel and similar ISO M-group workpiece materials.

Installation Notes

Installation and indexing of threading inserts should be performed by a qualified machinist with the machine spindle fully stopped and all motion axes locked. Seat the insert fully in the toolholder pocket and torque the clamping screw according to the toolholder manufacturer's specifications. Inspect the cutting edge and coating integrity before each use; a chipped or worn edge will produce out-of-tolerance thread forms. Always verify thread pitch and profile with a calibrated thread gauge after the first pass.