Tool-flo 604600RJ5A Threading Insert FLT-4R GP3 Carbide

Product Description

The TOOL-FLO 604600RJ5A is a carbide threading insert designed for both internal and external thread cutting operations. Built to the FLT-4R insert style in manufacturer grade GP3, this insert uses a micrograin carbide substrate with a Titanium Nitride finish applied via PVD coating process. It covers an external pitch range of 4-20 TPI and an internal pitch range of 4-12 TPI, making it a versatile option for threading across a broad range of fastener sizes. The 60-degree V-thread standard and right-hand cutting orientation suit common unified thread form applications. This insert is part of the Flo-Lock series and includes a chipbreaker (CB) geometry for improved chip control during threading passes.

This insert is suited for CNC lathes and manual turning centers performing thread-turning operations in production or job-shop environments. It handles both internal threading on bored features and external threading on turned diameters. The GP3 grade and PVD Titanium Nitride coating make it appropriate for threading steel, stainless, and similar ferrous materials where wear resistance and edge retention are priorities. Machinists and toolroom technicians working in metalworking and precision machining applications are the primary installers.

Key Features

• Carbide micrograin substrate with PVD-applied Titanium Nitride coating for extended tool life
• Covers 4-20 TPI external and 4-12 TPI internal pitch ranges in a single insert
• 60-degree V-thread form suits unified (UN) thread standards
• Right-hand cutting orientation with integrated chipbreaker (CB) geometry
• Insert size 4 with a thickness of 0.2550 inches and tip-to-top height of 0.1280 inches
• Corner radius range of 0.0050 to 0.0080 inches for precise thread root geometry

Compatibility

Designed for use with Flo-Lock series toolholders accepting FLT-style threading inserts with a size 4 insert designation and right-hand orientation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine before seating or replacing inserts. Use the appropriate torx or hex key to secure the insert to the specified clamp torque listed in the toolholder documentation. Verify insert seating and clearance angles before resuming cutting operations.