Tool-flo 5121000AC22F Threading Insert 4 Tpi 1/2 Inch Ic

Product Description

The TOOL-FLO 5121000AC22F is a solid carbide laydown threading insert designed for right-hand internal API Rotary Shoulder Connections threading. It carries a 22NR428 insert style designation and is manufactured from micrograin solid carbide with an AlTiN coating applied via a PVD process. The insert features a 1/2-inch inscribed circle and cuts at 4 threads per inch with a 60-degree included angle. This geometry is engineered for precision thread-form accuracy on demanding tubular and rotary shoulder connection applications. Machinists and CNC operators working on oilfield or energy-sector components will find this insert suited to a range of workpiece materials.

This insert is intended for internal threading operations on API Rotary Shoulder Connection profiles, commonly encountered in oilfield drilling equipment, downhole tooling, and related energy-sector components. The universal primary workpiece material rating spans multiple material groups including cast iron, non-ferrous, stainless, non-metals, steel, and heat-resistant alloys. It is sized for use in compatible 22NR-style laydown insert toolholders and is appropriate for both production and repair threading on CNC lathes.

Key Features

• Solid micrograin carbide substrate for enhanced edge strength and wear resistance
• AlTiN coating via PVD process for extended tool life at elevated cutting temperatures
• 4 TPI thread form with 60-degree included angle, matched to API Rotary Shoulder Connections standard
• Right-hand internal thread orientation in a laydown-style 22NR insert format
• 1/2-inch inscribed circle with a cutting edge to theoretical edge length of 0.080 inches and face-to-tip centerline of 0.100 inches
• Universal material compatibility covering steel, stainless, cast iron, non-ferrous, heat-resistant alloys, and non-metals

Compatibility

Designed for use in 22NR-style laydown threading insert toolholders configured for internal API Rotary Shoulder Connections thread profiles. Verify toolholder pocket geometry and clamping style before installation.

Installation Notes

Installation is performed by CNC machinists or skilled manual lathe operators. Power down and lock out the machine spindle before seating or replacing the insert. Use the correct torque key or clamping screw driver specified by the toolholder manufacturer to secure the insert - do not overtighten the clamping screw. Confirm insert seating and alignment before initiating a threading pass to avoid thread-form error or insert fracture.