Iscar 5902301 Threading Insert 12 Tpi Stub Acme IC908

Product Description

The ISCAR 5902301 is a solid carbide laydown threading insert designed for cutting external Stub Acme threads in a wide range of workpiece materials. Designated style 16ER, this right-hand insert operates at 12 threads per inch (TPI) and features an IC908 carbide grade with a TiAlN coating applied via PVD process. The TiAlN finish delivers heat and wear resistance suited to demanding threading operations on steel, stainless, cast iron, non-ferrous metals, and high-temperature alloys. With a 3/8-inch inscribed circle and a thickness of 0.143 inches, it fits standard 16-series laydown threading toolholders. Licensed tradespeople and precision machinists working in industrial and maintenance machining environments are the primary installers of this insert.

This insert is suited for external Stub Acme thread profiling on lathes and turning centers where a laydown insert orientation is required. Stub Acme threads are commonly found in power transmission components, lead screws, and linear motion mechanisms in both industrial and commercial machinery applications. The IC908 grade and PVD TiAlN coating make it a versatile choice across a broad spectrum of workpiece materials, including carbon steels, hardened steels, stainless steels, cast irons, aluminum, non-ferrous alloys, and heat-resistant superalloys, covering material codes H, K, M, N, P, and S per ISO designation.

Key Features

• Solid carbide construction in IC908 grade for wear resistance in universal material applications
• PVD TiAlN coating for elevated heat resistance and extended tool life
• 16ER laydown insert style fits standard 16-series external threading toolholders
• 12 TPI Stub Acme thread form for external thread cutting on power transmission components
• Right-hand cutting orientation for standard lathe setups
• Conforms to ISO 13399 tooling data standards for easy integration with CAM and tool management systems

Compatibility

Designed as an OEM-style replacement or production insert for standard 16-series laydown external threading toolholders accepting inserts with a 3/8-inch inscribed circle. Compatible across workpiece material groups H, K, M, N, P, and S per ISO classification.

Installation Notes

Insert seating and clamping should be performed by qualified machinists following the toolholder manufacturer's torque and clamping specifications. Power down and lock out the machine spindle before changing inserts. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert. Do not exceed the cutting parameters recommended for the IC908 grade and the specific workpiece material being threaded.