The Carmex Polygon Swiss Line Insert for Threading (ISO) — Left Hand is a precision, indexable cutting insert designed for Swiss-type and automatic lathes. Built to handle high-volume threading and turning tasks, it delivers consistent thread quality and efficient chip control across ISO threading applications.

Designed for left-hand threading and a range of finishing and turning operations—including external grooving, back/front turning, profiling, parting, and general turning—this insert is part of Carmex’s Polygon Swiss Line family, engineered to boost productivity on Swiss-type machines.

• Grounded cutting edges: Maintain precision and tool life with sharp, stable edges that resist chipping during demanding threading and turning tasks.
• Indexed directly on the machine: Quick, tool-change-like indexing without removing the insert, reducing downtime and speeding up high-volume production.
• Coated holders provide abrasion resistance: Protective coatings on the holders extend tool life and sustain consistent cutting performance in tough materials and long runs.

This insert supports reliable ISO threading on left-hand operations while improving workflow efficiency, reducing setup and downtime, and delivering repeatable results across batches. With its robust edge geometry, machine-indexable design, and abrasion-resistant holders, you can achieve smoother finishes, tighter tolerances, and faster cycle times on busy Swiss-type production lines.