Carmex 16IR8ACMEP30 Laydown Threading Insert 8 Tpi

Product Description

The CARMEX 16IR8ACMEP30 is a solid carbide, uncoated laydown threading insert designed for cutting internal Acme threads at 8 threads per inch (TPI). Manufactured to a P30 grade with a C5 material classification, this insert features a 29-degree included angle and a right-hand cutting orientation. With a 3/8-inch (0.3750 inch) inscribed circle and a thickness of 0.1460 inches, it is built for precision threading operations on a wide range of workpiece materials. Licensed machinists and CNC lathe operators use this insert for internal threading applications where consistent Acme thread form is required.

This insert is suited for internal Acme thread cutting across universal workpiece material categories, including ferrous metals, non-ferrous metals, stainless steels, heat-resistant alloys, and cast materials. The uncoated solid carbide construction makes it appropriate for applications where coating interaction with the workpiece is a concern or where regrinding may be needed. It is a right-hand insert intended for use in 16 IR-style laydown toolholders on CNC and manual lathes in both production and job-shop environments.

Key Features

• Solid carbide construction at P30 grade for threading durability across universal material groups
• Internal right-hand Acme thread form with 29-degree included angle
• 8 TPI thread pitch for standard Acme thread applications
• Uncoated finish allows use across a broad range of workpiece materials
• 3/8-inch inscribed circle and 0.1460-inch thickness conform to 16 IR insert geometry standards
• Compliant with CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed for use in 16 IR-style laydown threading toolholders. Compatible with workpiece material codes H, K, M, N, P, and S, covering a universal range of material groups including steels, stainless, cast iron, non-ferrous, and high-temperature alloys.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's seating and clamping specifications for laydown-style inserts. Ensure the lathe spindle is fully stopped and the machine is in a safe, locked-out state before changing inserts. Verify correct insert orientation and thread hand before beginning a threading pass. Follow applicable shop safety procedures and machine tool manufacturer guidelines for insert replacement and thread-form verification.