Tool-flo 613400LN4C Threading Insert GP50 Carbide 10-44 Tpi

Product Description

The TOOL-FLO 613400LN4C is a left-hand carbide threading insert in the Flo-Lock series, designed for both internal and external thread-cutting operations on CNC lathes and turning centers. The insert carries a GP50 manufacturer grade with a C5/C6 carbide material grade and features a titanium nitride (TiN) finish applied via PVD coating. It cuts a standard 60-degree V-thread profile and covers an external pitch range of 10 to 44 TPI and an internal pitch range of 9 to 24 TPI. Machining professionals and tool-room operators install this insert in compatible Flo-Lock toolholders for general-purpose threading on ferrous and non-ferrous materials.

This insert is suited for general-purpose threading in production and job-shop environments where both internal and external thread forms are required. The left-hand orientation makes it the correct choice for left-hand thread applications or specific toolholder configurations that require reversed cutting geometry. The FLTF insert style fits Flo-Lock series toolholders. It is appropriate for use on manual or CNC turning equipment where a 60-degree included angle thread form is specified.

Key Features

• GP50 grade carbide with C5/C6 material rating for general-purpose threading performance
• PVD-applied titanium nitride (TiN) coating for extended edge life and wear resistance
• Covers external pitch range of 10 to 44 TPI and internal pitch range of 9 to 24 TPI
• Left-hand cutting geometry for reversed or left-hand thread applications
• 60-degree V-thread profile for unified and metric-compatible thread forms
• FLTF-3L insert style fits Flo-Lock series toolholders

Compatibility

Designed for use with Flo-Lock series toolholders accepting the FLTF-3L insert style. Cuts both internal and external 60-degree V-thread forms across the stated TPI range.

Installation Notes

Installation and replacement of threading inserts should be performed by a qualified machinist or CNC tooling technician with equipment powered down and spindle locked before changing inserts. Verify the insert style, hand orientation, and TPI range match the toolholder and job requirements before securing the insert. Handle carbide inserts carefully to avoid chipping cutting edges. Follow the toolholder manufacturer torque specifications for the clamping screw.