Vargus 51382 Threading Insert 3ER 14 Tpi Un Carbide VM7

Product Description

The VARGUS 51382 is a carbide threading insert designed for external UN thread cutting on CNC lathes and turning centers. Built to the 3ER insert style, it cuts at 14 threads per inch (TPI) to the Unified National thread standard. The insert is manufactured from carbide in the VM7 grade and receives a PVD multi-layer coating for extended wear resistance and thermal stability at the cutting edge. Right-hand cutting geometry makes it compatible with standard external threading toolholders. Machinists and CNC operators install this insert for production threading of external UN fastener profiles in ferrous and non-ferrous materials.

This insert is suited for external threading operations in machine shops, production facilities, and job shops running CNC turning equipment. It handles Unified National thread forms at 14 TPI, making it applicable to common fastener and fitting thread profiles. The 3ER style seats into compatible ER-series external threading toolholders. Right-hand orientation means the insert cuts with standard forward-feed threading cycles on most CNC controls.

Key Features

• 3ER insert style for external UN threading operations
• 14 TPI Unified National thread standard
• VM7 carbide grade with PVD multi-layer coating for wear and heat resistance
• Right-hand cutting geometry for standard CNC threading cycles
• External thread type - designed for OD threading applications

Compatibility

Designed as a direct-fit replacement for 3ER-style external threading toolholders accepting UN thread inserts at 14 TPI. Consult your toolholder documentation to confirm 3ER insert pocket compatibility before ordering.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or replacing any insert. Use the correct torx or hex key specified by the toolholder manufacturer when securing the insert clamp screw - do not overtighten by hand or with impact tools. Verify insert seating and thread pitch against a known gauge or test part before running production.