Dormer, part of the Sandvik Group, has further expanded its high-performance, multi-application threading programme with the introduction of numerous titanium nitride coated taps.

Complementing Dormer’s existing bright finish and steam-tempered multi-material ranges, the new taps provide significantly improved wear resistance and increased productivity.

Available to DIN or ISO standard in both spiral point and spiral flute geometries, the versatile new taps will be of interest to anyone performing threading operations in steel, alloy steel, stainless, copper or aluminium.

The new surface treatment provides high hardness combined with low friction properties. This ensures considerably longer tool life and better cutting performance over uncoated taps.

All spiral flute geometry taps feature a three-radii flute profile with a constant rake angle that facilitates the creation of narrow, regular chips. This, combined with adequate flute space, results in negligible chip congestion.

Ricky Payling, sales manager at Dormer Tools, said: “The optimum combination of coating, material and geometry on these taps results in low wear and reduced cost per threaded hole.