Both thread-mills have TiALN/TiALN plus ZrN (zirconium nitride) coatings, and both are available in two grades – the wear-resistant WB10RD (with a gold-coloured surface) and the tougher WJ30RC (black surface) for less stable machining conditions. Both can be used on materials from the ISO P, M, K, N and S groups.
TC610 is for thread depths up to 1.5 times diameter, while TC611 is for up to two times diameter.
