Tool-flo 553616EAC50D Threading Insert 5 Tpi Carbide

Product Description

The TOOL-FLO 553616EAC50D is a carbide threading insert designed for external thread cutting operations. Manufactured in the Flo-Lock series and graded AC50D, this insert uses a PVD coating process to extend tool life and maintain edge integrity during threading passes. It is rated for 5 threads per inch (TPI) and carries an FLDC insert style designation. Machinists and tooling specialists install this insert into compatible Flo-Lock toolholders for production threading on lathes and CNC turning centers where consistent thread form and tool durability are required.

This insert is suited for external threading applications in metalworking and machining environments. The AC50D grade and PVD-coated carbide construction make it appropriate for threading operations on a range of ferrous and non-ferrous workpiece materials where controlled cutting geometry and wear resistance are priorities. It is typically used in production shops, job shops, and industrial machining operations requiring repeatable external thread profiles at 5 TPI.

Key Features

• Carbide substrate with PVD coating for extended edge life and thermal resistance
• AC50D manufacturer grade for consistent threading performance
• 5 TPI external thread pitch
• FLDC insert style in Flo-Lock series for secure toolholder retention
• Insert Size 3 geometry for compatible Flo-Lock toolholder seats
• UNSPSC Code 23291804 for procurement and catalog classification

Compatibility

Designed as an OEM-style replacement threading insert for Flo-Lock series toolholders accepting FLDC style, Size 3 inserts configured for 5 TPI external threading.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the machine powered down and the spindle locked before seating or replacing the insert. Use the torque wrench or insert clamp tool recommended by the toolholder manufacturer to secure the insert without over-stressing the clamping seat. Inspect the toolholder pocket for chips or debris before seating a new insert. Follow your shop safety procedures and machine tool manufacturer guidelines during all tooling changes.