Carmex 22UER4ABUTBMA Threading Insert 4 Tpi 1/2 Inch Ic

Product Description

The CARMEX 22UER4ABUTBMA is a solid carbide laydown threading insert designed for external American Buttress thread forms. It carries a TiAlN coating applied via PVD process, which provides heat and wear resistance across a wide range of workpiece materials. The insert runs at 4 threads per inch (TPI) and features a 1/2 inch inscribed circle (IC) with a thickness of 0.187 inches. It is intended for right-hand external threading operations on CNC lathes and turning centers. Machinists and tool-and-die professionals install this insert type when producing Buttress-profile threaded features on shafts, fittings, or structural components.

This insert is suited for both light and heavy-duty external threading passes on a broad range of workpiece materials, including ferrous, non-ferrous, and high-temperature alloys. The universal workpiece material designation covers material codes H, K, M, N, P, and S, making the 22UER4ABUTBMA a versatile choice for job shops and production environments where material types vary. The 45-degree included angle and 0.016 inch corner radius are appropriate for standard American Buttress thread profiles requiring clean, consistent thread form geometry.

Key Features

• Solid carbide substrate for rigidity and tool life in threading applications
• TiAlN PVD coating for elevated heat resistance and extended wear performance
• 4 TPI pitch for American Buttress external thread forms
• 1/2 inch inscribed circle with 0.187 inch insert thickness - standard 22-series laydown geometry
• Right-hand cut orientation for conventional external threading operations
• Universal material compatibility across H, K, M, N, P, and S workpiece material codes

Compatibility

Designed as an OEM-style replacement or direct-fit insert for 22-series laydown threading toolholders accepting external threading inserts with a 1/2 inch inscribed circle and 22ER insert style designation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is clear of the workpiece before seating or removing the insert. Confirm the insert is properly seated and the clamping screw is torqued per the toolholder manufacturer's specification. Verify thread profile and pitch with a thread gauge after the first threading pass before committing to a full production run.