Dormer Pramet expands product range with Shark Line taps

The new taps provide high performance and process security in hardened and tempered materials below 45 HRC

Dormer Pramet, Shark Line taps, Johan Bodin, E334 spiral point tap, E335 spiral flute tap, Black Shark taps

Dormer Pramet has expanded its range of Shark Line taps with a new assortment for high strength steels and titanium alloys.  Available in spiral point (E334) and spiral flute (E335) geometries for through and blind hole threading respectively, the new taps provide high performance and process security in hardened and tempered materials below 45 HRC.

Immediately identifiable due to the black ring on their shank, the new taps incorporate a robust geometry which significantly increases cutting edge strength and supports problem-free, high quality thread production.

In addition, both feature a TIAlN-Top coating and are manufactured from a unique powder metallurgy tool steel for toughness, longer tool life and increased performance at higher operating temperatures.
Johan Bodin, product manager for threading at Dormer Pramet, said: “With our Black Shark range we offer customers the opportunity to machine high strength, high value work-piece materials, with a strong level of reliability.

“Imagine threading an expensive component in the final stages of a complex machining process and either the tool breaks or worse, the resulting thread is out of tolerance. Our Black Shark taps provide the user with the process security needed to ensure this does not happen.
“This introduction further strengthens the Shark Line’s position as one of the world’s leading assortments of HSS performance taps.”

The E334 spiral point tap provides through-hole threading up to 2.5xD with a low rake angle for good chip control and edge strength. With a balanced higher relief on the chamfer and lower relief on the guidance threads, the E335 spiral flute tap supports blind hole threading up to 1.5xD.

Each tap within Dormer Pramet’s Shark Line assortment features a colour ring denoting material suitability, promoting quick and easy tool selection. Other material types covered in the range include red ring for alloy steels, yellow for structural, carbon and low alloy steels, blue for stainless steel, green ring for aluminium and white for cast iron.


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