Tool-flo 603600LJ5R Threading Insert FLT-3L GP3 Carbide

Product Description

The TOOL-FLO 603600LJ5R is a left-hand carbide threading insert in the Flo-Lock series, designed for precision thread-cutting on both internal and external workpieces. It carries the GP3 Micrograin carbide grade and a PVD-applied Titanium Nitride finish coating, which extends edge life in demanding threading operations. The insert follows the 60-degree V thread standard and covers an internal pitch range of 5-12 TPI and an external pitch range of 6-20 TPI. It features a chipbreaker (CB) geometry and is sized at insert size 3. Machinists and CNC operators working in metalworking environments install this insert into compatible Flo-Lock toolholders for thread-milling and turning applications.

This insert is suited for threading operations on CNC lathes and turning centers where left-hand thread profiles are required. The 60-degree included angle makes it applicable to standard unified and metric V-thread forms. It is appropriate for shops handling a wide range of thread pitches on both internal bores and external diameters. The Micrograin carbide substrate and PVD coating make it a practical choice for steel, stainless, and similar materials where edge integrity and surface finish matter. It is sold individually but requires a minimum order of 10 units.

Key Features

• GP3 Micrograin carbide grade for consistent edge sharpness and wear resistance
• PVD Titanium Nitride finish coating extends tool life in threading operations
• Left-hand insert geometry for left-hand thread cutting on internal and external workpieces
• 60-degree V thread standard covers unified and standard V-thread profiles
• Internal pitch range 5-12 TPI and external pitch range 6-20 TPI in a single insert
• CB chipbreaker geometry helps manage chip flow during threading passes

Compatibility

Designed for use with Flo-Lock series toolholders that accept FLT-style, size 3 threading inserts in left-hand orientation.

Installation Notes

Installation and indexing of threading inserts should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before seating or replacing inserts. Use the correct torque wrench and insert screw specified for the toolholder to avoid clamp damage. Inspect the insert pocket and seating surface for chips or debris before installation to ensure proper seating and thread accuracy.