Hertel H08706590 Threading Insert 14 Tpi 3/8 Inch Ic

Product Description

The HERTEL H08706590 is a solid carbide laydown threading insert designed for external UN thread cutting at 14 threads per inch (TPI). Manufactured in the 16ER insert style, this right-hand insert features a TiC/TiN coating that extends cutting edge life in demanding thread-turning applications. The 3/8 inch (0.3750 inch decimal) inscribed circle and 0.146 inch thickness conform to standard laydown geometry, allowing direct drop-in use in compatible 16ER toolholders. Machinists and CNC lathe operators use this insert for producing unified national (UN) external threads on production turning centers and manual lathes alike.

This insert is suited for external threading operations on ferrous and non-ferrous materials where a UN thread form is required. The 16ER style seats in standard laydown threading toolholders commonly found in production and job-shop environments. A 0-degree relief angle means the toolholder provides the necessary clearance, keeping the insert geometry consistent across its full cutting edge. The TiC/TiN finish improves wear resistance and surface finish on threaded workpieces. This insert is sold individually but requires a minimum order quantity of 10 pieces per purchase.

Key Features

• Solid carbide substrate for rigidity and wear resistance in thread-turning operations
• TiC/TiN multi-layer coating for extended tool life and reduced built-up edge
• 14 TPI UN external thread form, right-hand cut
• 16ER insert style with 3/8 inch (0.3750 inch) inscribed circle
• 0.146 inch insert thickness with 0-degree relief angle for laydown toolholder compatibility
• Individual package quantity with minimum order of 10 pieces

Compatibility

Designed for use in standard 16ER laydown threading toolholders that accept a 3/8 inch inscribed circle insert with a 0-degree relief angle for external UN thread applications.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the lathe or turning center is fully powered down and the spindle is locked before indexing or replacing threading inserts. Seat the insert firmly against the toolholder pocket and tighten the clamping screw to the toolholder manufacturer specification. Verify thread form and pitch with a thread gauge before running production parts.