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Walter Introduces New Benchmark Grade for Thread Milling

The Walter Tiger·tec Gold grade WSM37G is for indexable insert thread mills.

Wal 595
Walter Tools

Walter (Greer, SC) announced Tiger·tec Gold WSM37G, a wear-resistant thread milling grade with the physical vapor deposition (PVD) aluminum oxide (Al2O3) coating technology.

The indexable inserts made of this universal grade are effective for machining blind-hole and through-hole threads in steel, stainless steel, cast iron, heat-resistant super alloys and steel with a hardness up to 55 HRC (ISO P, M, K, S and H material groups).


  • WSM37G inserts for milling threads with nominal diameter from UNC ¾ or 16 mm with pitch range from 3 to 18 threads per inch (TPI) or 1.5 to 10 mm
  • Titanium aluminum nitride (TiAlN) coating on carbide substrate for high level of wear resistance
  • Al2O3 coating for high temperature resistance
  • Zirconium nitride (ZrN) for friction-reduction characteristics and wear detection 
  • Offered in two easy-cutting geometries with positive basic shape and each with three cutting edges
  • Both geometries have smooth, low-friction rake face and defined corner radii for producing threads
  • D67 universal geometry for achieving maximum tool life
  • D61 geometry with anti-vibration land for thread milling with high level of operational smoothness when using large projection lengths or under difficult machining conditions

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