Kennametal 3769356 DCMT2151FP Carbide Turning Insert

Product Description

The KENNAMETAL 3769356 is a solid carbide turning insert with an AlTiN (aluminum titanium nitride) PVD coating, designed for precision metal-cutting operations in CNC and manual turning applications. Designated by the ANSI code DCMT2151FP and ISO code DCMT070204, this insert features a 55-degree diamond (rhombic) shape with a positive rake angle of 15 degrees and a 7-degree relief angle. The FP chip breaker geometry targets finishing passes, delivering tight surface finishes and controlled chip evacuation. The inscribed circle measures 0.25 inches, insert length is 0.6104 inches (7.75 mm), and the corner radius is 0.0156 inches (1/64 inch). Two cutting edges per insert and a screw-on holding method make it a practical choice for high-volume turning environments.

This insert is rated for use across multiple workpiece material groups including stainless steel and superalloys (M), steel (P), cast iron (K), aluminum and non-ferrous materials (N), and high-temp alloys (S and H). It is suited for turning, facing, boring, back turning, and back boring operations. The KCU10 grade delivers high wear resistance balanced with moderate toughness, making it effective on difficult-to-machine materials where edge stability matters. Typical applications include finish turning on CNC lathes in precision machining shops, job shops, and aerospace or industrial manufacturing environments. Licensed machinists and CNC operators are the primary users of this insert style.

Key Features

• 55-degree diamond insert shape (DCMT) with positive rake and positive side clearance for reduced cutting forces
• AlTiN PVD coating provides high wear resistance across steel, stainless, cast iron, and non-ferrous workpiece materials
• FP chip breaker geometry optimized for finishing operations and controlled chip flow
• Screw-on insert holding method for secure, repeatable seating in compatible toolholders
• Two usable cutting edges per insert
• Conforms to ANSI and ISO insert standards for broad toolholder compatibility

Compatibility

Designed for use in DCMT-style screw-on turning toolholders conforming to ANSI and ISO insert pocket specifications for 2151 (ANSI) and 070204 (ISO) size codes. Suitable for multi-use turning applications including facing, boring, back turning, and back boring.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before seating or replacing inserts. Use the correct torx or hex key to torque the clamping screw to the toolholder manufacturer's specification — do not over-tighten, as this can fracture the carbide insert. Inspect the insert pocket and seating surface for chips or debris before installing a fresh edge.