"Reduce cycle-time and tooling costs with the Duracarb TNMG160408 43 DC9025—longer life, smoother finishes, and faster feeds!"


The Duracarb TNMG160408 43 DC9025 is a precision-engineered, triangular turning insert featuring a 60° included angle and a 0.8 mm corner radius. With a robust 4.76 mm thickness and 9.52 mm inscribed diameter, it is designed for balanced performance in external turning. The DC9025 grade (CVD/PVD coated) offers exceptional wear resistance and durability, especially in steel, stainless, and cast iron applications. A neutral-hand insert, it allows seamless tool setup changes, enabling machinists to maintain high feeds and fine surface finish without frequent interruptions. Ideal for automotive, aerospace, die & mold, and general engineering sectors, this insert delivers consistent and reliable results in demanding CNC environments.

Key Features

  • Geometry: Triangular TNMG insert, 60° included angle, neutral hand, with a corner radius (RE) of 0.8 mm, a thickness of 4.76 mm, and an inscribed circle of 9.52 mm.

  • Grade & Coating: Premium DC9025 grade—CVD or PVD-coated for outstanding wear resistance and durability (implied by product category and typical series naming).

  • Cutting Application: Designed for external turning with versatile neutral orientation, ideal for general to finishing steel, stainless, and cast iron turning tasks.

Why It's a Best Seller

  • Longer tool life & less downtime: DC9025 grade delivers high wear resistance, minimizing insert changes and boosting uptime.

  • Superior surface finish: Precise geometry and robust cutting edge help produce consistent finishes, even in demanding feed-rates.

  • Versatile & reliable: Neutral orientation and well-balanced design make it easy to swap across setups—cutting inventory and setup complexity.

🏭 Applications

  • Automotive – machining shafts, bushings, and external profiles with high wear resistance

  • Aerospace – tight-tolerance turning of stainless and alloy components

  • Die & Mold – finishing operations on hardened material components

  • General Engineering – robust performance across steel and cast iron turning applications

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Frequently Asked Questions

It has a 60° triangular geometry, a corner radius (RE) of 0.8 mm, insert thickness of 4.76 mm, and inscribed circle of 9.52 mm.

The DC9025 grade is engineered for use in steel, stainless steel, and cast iron—delivering superior wear resistance and high productivity.

The neutral orientation means the insert can be used for either right or left-handed turning operations, simplifying tool inventory and setup flexibility.

Coated DC9025 grade tools significantly extend insert life, reduce wear, and cut tool-change frequency—helping maintain consistent quality and productivity.

Widely applied in automotive, aerospace, die & mold, and general engineering, where reliability, finish quality, and sustained performance are crucial.