Tool-flo 603600HCLAC22R Threading Insert Carbide Left Hand

Product Description

The TOOL-FLO 603600HCLAC22R is a carbide threading insert in the Flo-Lock series, designed for both internal and external thread cutting operations on CNC lathes and turning centers. Built to the FLT-3L-HCB insert style with an AC22R grade designation, this insert features a 60-degree V thread form and handles an external pitch range of 6-20 TPI and an internal pitch range of 5-12 TPI. The PVD coating process over a submicron carbide substrate improves wear resistance and extends tool life in demanding threading applications. A left-hand orientation and HCB chipbreaker geometry make this insert well suited for high-precision threading passes where chip control is critical.

This insert is used in threading operations on CNC turning equipment across metalworking environments including job shops, production machining facilities, and aerospace or industrial component manufacturing. It handles both internal thread forms such as bores and tapped features and external thread forms on shafts and fasteners. The 60-degree included angle covers unified inch thread standards. Machinists and CNC operators working with steel, alloy, and similar workpiece materials will find this insert appropriate for finish and semi-finish threading passes requiring tight tolerance and consistent thread profile.

Key Features

• Carbide construction with PVD coating for extended wear resistance
• Submicron carbide substrate grade for improved edge toughness
• Covers 6-20 TPI external pitch and 5-12 TPI internal pitch in a single insert
• 60-degree V thread form for unified inch thread standards
• Left-hand insert orientation for dedicated left-hand threading operations
• HCB chipbreaker geometry for controlled chip evacuation during threading passes

Compatibility

Designed for use in Flo-Lock series threading toolholders accepting size 3 FLT-style inserts. Confirm holder seat geometry and insert size before installation.

Installation Notes

This insert is installed and replaced by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully in the holder pocket and torque the clamping screw according to the toolholder manufacturer specifications. Inspect the insert seating surface and clamp for wear or debris before each installation to ensure proper edge presentation and thread accuracy.