Dormer Threading Tap, M4 Thread, 0.7mm Pitch, Metric Standard

The Dormer M Machine tap with spiral flute suited for blind holes. The bright finish to produce more accurate and cleaner threads preventing the work piece material from sticking to the cutting edges. This machine tap has powder metallurgical HSS E with bright finish and 45 degree helix angle for 2.5xD blind hole threading in free machining and plain carbon steel and wrought or cast aluminium.

ISO 529 tap standard
Thread form and metric coarse
Right hand rotation and cutting
DIN thread pitch diameter tolerance zone
Spiral point geometry and semi bottoming tap chamfer