Carmex Thread Turning Internal Insert, model 11IL12UNBMA, is a precision tool designed for creating internal threads with dependable accuracy. This compact insert is built for reliable performance across a range of applications, helping you achieve clean threads with minimal setup.

Part of our industry-leading range, these left-hand, laydown triangular inserts cover UNC, UNF, UNEF, and UNS thread standards, making them suitable for a wide variety of tasks—from basic to demanding.

• Broad thread standard compatibility (UNC/UNF/UNEF/UNS): One insert supports the major internal thread standards, reducing the need to stock multiple parts and speeding up tool changes.
• Left-hand threading capability: Specifically designed for left-hand threads, expanding the range of parts you can process without swapping tools.
• Triangular laydown geometry for stability and precision: The laydown triangular design provides stable cutting action, minimizes chatter, and helps deliver consistent, clean threads across a variety of materials.

Used across basic to demanding applications, this insert helps your shop improve throughput by enabling faster setups, reducing tool changes, and delivering repeatable, high-quality internal threads. Rely on its reliable design to support your machining needs with confidence.