Seco 00050322 Threading Insert 8 Tpi Un Solid Carbide

Product Description

The SECO 00050322 is a laydown threading insert designed for cutting internal UN threads on CNC lathes and threading machines. Manufactured from solid carbide in the CP500 grade with micrograin structure, it carries a PVD-applied TiAlN/TiN coating for extended tool life across a wide range of workpiece materials. The insert follows the 16NL style with an inscribed circle of 0.3750 inches and a thickness of 0.1366 inches. It cuts at 8 threads per inch with a 60-degree included angle and is configured for left-hand internal threading. This insert suits machinists and toolroom technicians running precision threading operations on lathes equipped with Snap Tap toolholders.

This insert is suited for internal UN thread profiles in both production and job-shop environments. It is a left-hand insert, making it appropriate for threading operations where the spindle or feed direction requires a left-hand cutting geometry. The CP500 grade with universal material coding covers cast iron, steel, nonferrous metals, stainless, and high-temperature alloys, making it a versatile option for shops working across multiple material categories. Packaged individually, it is a direct replacement or consumable replenishment insert for compatible 16NL Snap Tap toolholders.

Key Features

• Solid carbide construction with micrograin substrate for rigidity and edge strength
• PVD TiAlN/TiN coating for heat resistance and extended wear life
• 8 TPI cutting geometry with 60-degree included angle for standard UN thread form
• Left-hand internal thread orientation for reverse-feed or left-hand threading setups
• Universal material grade covers steel, cast iron, nonferrous, stainless, and superalloys
• ISO-standard geometry in the 16NL insert style for use with Snap Tap toolholders

Compatibility

Designed for use with 16NL-style Snap Tap threading toolholders. Compatible workpiece material codes include K, M, N, P, and S per the supplier specification. Verify toolholder pocket geometry and insert style code before installation.

Installation Notes

Threading inserts should be installed by a qualified machinist or toolroom technician. Power down and lock out the machine before changing inserts. Use the correct torque wrench and insert screw specified by the toolholder manufacturer to avoid cracking the carbide substrate. Inspect the toolholder pocket for wear, chips, or debris before seating the insert, and confirm correct hand orientation matches the programmed feed direction before resuming operation.