Accupro 75366443 Turning Insert SCMT431 Carbide Pvd

Product Description

The ACCUPRO 75366443 is a carbide turning insert designed for precision metal-cutting operations on CNC and manual lathes. Conforming to ANSI insert code SCMT431 and ISO insert code SCMT120404, this insert features a square shape with a 90-degree included angle and a 7-degree relief angle. The insert is PVD coated under manufacturer grade ACM25P, combining high wear resistance with a range of toughness levels suited to steel, stainless steel, and special or super alloys. It is installed by licensed machinists and toolroom technicians in production turning and finishing applications.

This insert is suited for turning steel (P classification), stainless steel (M classification), and special and super alloys (S classification). The WM+ chip breaker geometry supports a range of cutting conditions from light finishing to moderate roughing passes. With a 0.0157-inch (0.40 mm) corner radius, it is well matched to applications requiring a fine surface finish while maintaining edge integrity. Typical use cases include OD turning, facing, and contour work on both horizontal and vertical lathes in job shop and production environments.

Key Features

• PVD coating with ACM25P grade for high wear resistance across steel and stainless steel workpieces
• SCMT square insert shape with 90-degree included angle and positive side clearance
• WM+ chip breaker geometry supports steel, stainless steel, and special alloy cutting
• 4 usable cutting edges per insert for extended tooling economy
• Screw-lock holding method for secure, repeatable indexing in compatible toolholders
• 0.40 mm corner radius minimizes workpiece stress while delivering smooth surface finishes

Compatibility

Designed as an OEM-style replacement turning insert conforming to ANSI code SCMT431 and ISO code SCMT120404. Compatible with SCMT-style toolholders that accept a 0.5000-inch inscribed circle, 0.1874-inch thick square insert with a screw-lock holding method and a 0.2205-inch hole diameter.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder manufacturer's specified seating method — do not overtighten, as this can fracture the insert. Verify insert seating and edge orientation before resuming cuts.