Iscar 5901912 Threading Insert 60 Deg Internal Carbide IC908

Product Description

The ISCAR 5901912 is a laydown-style threading insert designed for internal thread cutting operations. It carries the IC908 grade designation, a PVD-coated solid carbide substrate with a TiAlN finish engineered for toughness and wear resistance in demanding threading applications. The insert produces a 60-degree partial profile thread using a right-hand cutting geometry and covers a thread pitch range of 7 to 5 TPI (3.50 to 5.00 mm pitch). With a 1/2-inch (0.5000 inches) inscribed circle and a thickness of 0.1880 inches, the 5901912 seats in standard 22IR-style toolholders. It is part of the ISCARTHREAD series and conforms to ISO 13399 standards.

This insert is suited for internal threading on a broad range of workpiece materials, including steel, stainless steel, cast iron, non-ferrous alloys, high-temperature alloys, and other materials corresponding to ISO material groups H, K, M, N, P, and S. Typical applications include threading bores on turned components in production machining environments. The universal material grade compatibility makes it a practical choice for job shops and production facilities handling varied material types on CNC lathes and turning centers. Minimum order quantity is 5 inserts; the package contains 1 insert per unit.

Key Features

• IC908 PVD-coated solid carbide grade with TiAlN finish for extended tool life in threading operations
• 60-degree partial profile internal thread form, right-hand cutting direction
• Covers 7 to 5 TPI range (3.50 to 5.00 mm pitch)
• 1/2-inch inscribed circle, 22IR insert style for compatibility with standard toolholders
• Universal workpiece material compatibility across ISO groups H, K, M, N, P, and S
• Conforms to ISO 13399 tooling data standards

Compatibility

Designed for use in 22IR-style internal threading toolholders. Specific compatible toolholder model numbers were not provided in the available product data; consult ISCAR toolholder documentation for confirmed fitment.

Installation Notes

Threading inserts of this type are installed and replaced by machining professionals on CNC lathes and turning centers. Power down and lock out the machine before changing inserts. Use the appropriate torx or clamp screw driver as specified by the toolholder manufacturer; do not overtighten the clamping screw. Inspect the toolholder pocket and clamping components for wear or debris before seating the insert.