Dormer Machine Taps

Dormer machine tap ranges have been designed for use with a high quality floating tool holder. For synchronous tapping on CNC machines with a rigid tapping cycle, Dormer SynchroFlex tool holders are recommended for a precisely defined minimum compensation in order to maximise machine performance. This is particularly important for larger sizes of spiral flute taps.

Available in spiral point for through holes and spiral flute for blind holes with 45 spiral angle. The three radii profile, with a constant rake angle all along the flute, is specially designed to give an optimum performance and chip evacuation in materials being threaded.
Surface Treatment
Special gold finish with bright flutes/thread, or steam tempering (blue) guarantee a smooth cutting action with less build up on the cutting edge.

Manufactured from HSS-XS1 premium quality vanadium powder steel and HSCo for superior toughness and edge strength, to give a high resistance to wear and long tool life.

All taps are available in Metric thread form initially. Thread forms Metric Fine, UNC, UNF and G will be stocked from September 2010.
Short Thread Length
The short thread length means low torque and better chip evacuation.
Thread Depth
Threading to depths of up to 2.5 x Diameter.

EX01 Series Spiral Flute Metric Machine Tap

Dormer Spiral Point Machine Taps for through holes.
With Blue finish.
Taper lead to DIN form C.
Tapping tolerance to 6H.
Max depth 2.5 x D.
Helix angle 45.

EP00 TiN DIN 371 Spiral Point Metric Taps

Titanium Nitride Finish
Tolerance: 6H

Dormer Taps

Dormer MTT-X Series taps are manufactured from HSS-X1 Steel with a Bright finish, they are right Hand Cutting.

Manufactured to ISO 529
Spiral Flute for threading blind holes.
Taper lead to DIN form C.
Tapping tolerance to 6H.
Max Depth 2.5 x D.
Helix angle 48.

For all technical and dimensional specifications please refer to our catalogue.

Dormer Machine 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. Special gold finish with bright flutes/thread, or steam tempering (blue) guarantee a smooth cutting action with less build-up on the cutting edge.

For all dimensional specifications please refer to our catalogue.

ISO Metric: E000 Spiral Point (Gold Coated)

For through holes. Taper lead to DIN form B. Tapping tolerances to 6H. Max depth 2.5 x D.

Dormer Taps

Dormer MTT-X Series taps are manufactured from HSS-X1 Steel with a Bright finish, they are right Hand Cutting.

Manufactured to ISO 529
Spiral Flute for threading blind holes.
Taper lead to DIN form C.
Tapping tolerance to 6H.
Max Depth 2.5 x D.
Helix angle 48.

For all technical and dimensional specifications please refer to our catalogue.

MTT-X Series E023 Spiral Flute UNC (Unified Coarse) Tap

Dormer Taps

Dormer MTT-X Series taps are manufactured from HSS-X1 Steel with a Bright finish, they are right Hand Cutting.

Manufactured to ISO 529
Spiral Flute for threading blind holes.
Taper lead to DIN form C.
Tapping tolerance to 6H.
Max Depth 2.5 x D.
Helix angle 48.

For all technical and dimensional specifications please refer to our catalogue.

EP11 DIN 374 Spiral Point Metric Fine Taps

Steam Tempered Finish
Tolerance: 6H

EP10 DIN 374 Spiral Point Metric Fine Taps

Bright finish
Tolerance: 6H

Dormer Taps

Dormer MTT-X Series taps are manufactured from HSS-X1 Steel with a Bright finish, they are right Hand Cutting.

Manufactured to ISO 529
Spiral Flute for threading blind holes.
Taper lead to DIN form C.
Tapping tolerance to 6H.
Max Depth 2.5 x D.
Helix angle 48.

For all technical and dimensional specifications please refer to our catalogue.

MTT-X Series E003 Spiral Flute Metric Tap HSS-X1

EP31 DIN 2184-1 Spiral Point UNF Taps

Steam Tempered Finish