Chesterfield-based Dormer Pramet UK (www.dormerpramet.com) has developed 10 new lines of taps for maintenance, repair and overhaul (MRO) operations — particularly for technicians who work with motors, pumps, engines and valves in the automotive, aerospace and oil and gas sectors.

Suitable for use in hand-held or portable machines, the HSS taps are available in metric, metric fine and BSP thread forms in straight-flute, spiral-point and spiral-flute geometries. Options exist for both blind- and through-hole applications across a range of workpiece materials.

Manufactured to DIN standards, all the taps incorporate a bright finish to ensure multi-material versatility; they also have an optimised geometry for good chip control, says Dormer Pramet.

The straight-flute taps (E784, E781 and E787) are suitable for threading cast iron up to 1.5xD in both blind- and through-hole applications. The spiral-point taps (E785, E782 and E788) are for through-hole threading up to 2.5xD, while the spiral-flute taps (E786, E783 and E789) are for blind-hole threading up to 2.5xD.

To support the launch of these tools, Dormer Pramet has developed three new six-piece tap sets in metric thread form, covering straight-flute, spiral-point and spiral-flute geometries.