Dormer Threading Tap, M1 Thread, 0.25mm Pitch, Metric Coarse Standard

The Dormer Straight flute hand tap NO1 with a 6 to 8xP taper lead with 0.25 mm pitch and 6H class of fit. The dimensions according to ISO 529 standard with 2.5 mm shank and 2.0 mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining and plain carbon steel.

Versatile tool
Suitable for hand and machine tapping
Straight flute hand taps for ISO Metric thread
Straight flute design for both through and blind holes