Dormer Threading Tap, M8 Thread, 1.25mm Pitch, Metric Standard, Machine Tap

A range of machine metric thread spiral flute HSS-XS1 taps from Dormer with a tap bit tolerance class of 6H. Specially formulated high helix of 45º allows adequate room for chip formation and rapid and smooth chip evacuation at high cutting speeds for threading blind holes of up to 2.5 x diameter of the tap used. The 3 radii flute profile gives a constant rake angle all along the flute length, while the short thread length means low torque and better chip evacuation.

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. Taps can be used in machines like drill presses or with hand tools such as a tap wrench.

Dormer Series E003 HSS-XS1 Metric Thread Spiral Flute Machine Tap Bits are available in selection of sizes to choose from:
E003 XS1 MC SP/FL TAP ISO529 M3 - 528-3812
E003 XS1 MC SP/FL TAP ISO529 M4 - 528-3834
E003 XS1 MC SP/FL TAP ISO529 M5 - 528-3856
E003 XS1 MC SP/FL TAP ISO529 M6 - 528-3862
E003 XS1 MC SP/FL TAP ISO529 M8 - 528-3878
E003 XS1 MC SP/FL TAP ISO529 M10 - 528-3884
E003 XS1 MC SP/FL TAP ISO529 M12 - 528-3890

Material HSS-XS1 - for high durability, toughness and resistance to corrosion
M Machine Tap MTT-X Spiral Flute 45º
Metric thread type
Right handed thread direction – designed to tighten when a head or nut is rotated clockwise
Available in various sizes

Taps and dies are used to create screw threads (commonly known as threading). Taps make nuts and a die makes a bolt. Forming threads using a tap is known as tapping, but using a die calls the process threading. Threading taps are used in applications such as:
Engineering
Manufacturing

FAQs
What is HSS?
An acronym for High-speed steel, HSS is generally the go-to type of steel needed for tap and drill bits due to their excellent heat resistance at high speeds. As a standard drill can spin upwards of around 500 - 700rpm, the friction can cause a substantial build-up of heat. Something which would not be wanted when working with wood and plastic.

What are the different types of threading taps?
The four most popular ones are:
Straight Flute Taps: most commonly used type of tap and suitable for blind or though hole thread production in most materials, mainly steel and cast iron. These collect chips in the straight flutes of the tool.

Spiral Point Taps: suitable for threading through holes. They push chips through holes ahead of the tool.

Spiral Flute Taps: intended primarily for threading blind holes. They pull chips back from the tip of the tool and up and out of the hole.

Forming Taps: produce a thread by pressing the material rather than cutting and no chips are created.

These Dormer taps are Spiral Flute Taps.

What is chamfer?
Chamfer is a term that refers to the size of the threads on a tap that taper, allowing for the cutting thread to be gradually enlarged.

MTTX-HSS Taps

MTT-X taps are manufactured from premium quality vanadium powder steel, branded HSS-XS1, for an unbeatable combination of toughness, edge strength and wear resistance. This winning combination enables them to withstand the stresses of threading in tough materials.