Tool-flo 554004RAC50E Threading Insert 4 Tpi Acme Carbide

Product Description

The TOOL-FLO 554004RAC50E is a carbide threading insert designed for both internal and external Acme thread cutting operations. Built to the FLA insert style in the Flo-Lock series, it cuts at 4 threads per inch (TPI) with a right-hand orientation. The AC50E manufacturer grade carbide substrate receives a PVD coating process, providing a coated finish suited for demanding threading applications. With a tip-to-top height of 0.2020 inches and a cutting tip width of 0.0875 inches, this insert delivers precise thread form geometry. It is installed and changed by machinists and toolroom technicians working with Acme-threaded components.

This insert is applied in machining environments where Acme thread forms are required on internal or external workpieces. The Flo-Lock series is commonly used in toolholding systems that require secure, repeatable insert indexing. At 4 TPI, this insert is suited for coarse Acme thread applications typical in lead screws, power transmission components, and industrial valve stems. Shops running production threading cycles or job-shop threading operations will find this insert compatible with standard Flo-Lock toolholders accepting FLA4 style inserts.

Key Features

• Carbide substrate with PVD coated finish for extended wear resistance
• 4 TPI Acme thread form for internal and external threading
• Right-hand cut orientation, FLA insert style
• AC50E manufacturer grade for consistent thread quality
• Cutting tip width of 0.0875 inches for accurate Acme thread form geometry
• Insert thickness of 0.2550 inches for stable seating in Flo-Lock toolholders

Compatibility

Designed for use with Flo-Lock series toolholders accepting FLA4 style threading inserts. Suitable for Acme thread cutting on lathes and threading machines running right-hand internal or external thread operations.

Installation Notes

This insert is installed by qualified machinists or toolroom technicians. Power down and lock out the machine before changing inserts. Use the appropriate insert seating tool or torx key as specified by the toolholder manufacturer to seat the insert securely without overtightening. Inspect the insert pocket and clamping mechanism for wear or debris before seating a new insert.