A range of high-speed steel (HSS) spiral flute thread taps and drill combination from Dormer which are used to drill holes and create metric right-hand threads in a variety of materials. The tool drills and threads holes in one operation. The E650 features a 30 degree spiral flute which pulls chips back from the tip of the tool and out of the hole to prevent clogging. This tool is suitable for use with reversible, variable speed power tools, drill presses and hand tools such as tap wrenches.

Threading taps are used to create threads for bolts in materials like metals and plastics. Threading taps work like a drill but due to the unique shape of a tap, when they are screwed into a piece of material screw threads are created.

This range includes the following combination thread tap sizes:
373-796 - HSS M4 65 mm Length, E650
373-803 - HSS M5 69 mm Length, E650
373-819 - HSS M6 84 mm Length, E650
373-825 - HSS M8 96 mm Length, E650
373-831 - HSS M10 108 mm Length, E650
373-847 - HSS M12 113 mm Length, E650
Material HSS (high speed steel) - for high durability and resistance to corrosion
Combination Taps Spiral Flute 30°
Manufactured to ISO standards
Metric thread type
Black oxide finish – resists corrosion, will not chip or flake
Taps incorporating a pilot drill ground on the same shank
Right handed thread direction – designed to tighten when a head or nut is rotated clockwise
Round shank with square end – helps to minimise rotation in the tool holder