Tool-flo 16158FAC50D Laydown Threading Insert 5 Tpi

Product Description

The TOOL-FLO 16158FAC50D is a laydown-style solid carbide threading insert engineered for internal API Buttress thread profiles. Running at 5 threads per inch with a 1/2 inch inscribed circle and a 0.189 inch thickness, this insert is built to cut accurate buttress thread forms in demanding downhole and oilfield pipe applications. The AC50D grade micrograin carbide substrate receives a PVD-applied AlTiN coating for heat resistance and extended tool life when threading cast iron and steel workpieces. Machinists and toolroom operators working on API-spec tubular goods will find this insert dimensionally consistent and ready to run on compatible laydown toolholders.

This insert is intended for internal threading operations on API Buttress thread-form components, including casing, tubing, and coupling connections common in oil and gas production. The 60-degree included angle and single tooth-per-side geometry produce clean thread flanks in medium-to-hard steels and cast iron. It is suited for CNC lathes and turning centers equipped with laydown insert toolholders in the L43 series, where consistent thread geometry is critical to meeting API connection specifications.

Key Features

• Solid carbide micrograin substrate with AC50D manufacturer grade for wear resistance in ferrous materials
• PVD AlTiN coating provides thermal stability and reduced edge buildup during threading
• Internal API Buttress thread profile at 5 TPI and 60-degree included angle
• 1/2 inch inscribed circle with 0.189 inch thickness fits L43 series laydown toolholders
• Rated for primary workpiece materials including steel and cast iron
• Single tooth-per-side design for controlled thread form engagement

Compatibility

Designed for use in L43 series laydown insert toolholders. Compatible primary workpiece materials are steel and cast iron. Insert style code L43 and insert size code 43 should be confirmed against the toolholder specification before installation.

Installation Notes

This insert is installed and replaced by a machinist or toolroom technician on a CNC lathe or turning center. Power down and lock out the spindle before seating or removing the insert. Confirm insert orientation and seating in the pocket before starting the threading cycle. Do not exceed the toolholder manufacturer's recommended clamping torque for the insert screw.