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Straight flute hand tap NO1 with a 6-8xP taper lead, for ISO-Metric thread M3.5 with 0.60 mm pitch and 6H class of fit, dimensions according to ISO 529 standard with 3.55mm shank and 2.8mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining and plain carbon steel
Dormer E500 straight flute taps are the only type of taps that can be used by hand, but they may also be used in a machine if required.
Extremely versatile, can tap through or blind holes in most materials. When tapping blind holes straight flute taps should be used in sets. The three taps which form a set are known by more than one name.
Metric coarse straight flute taps.
Tolerance: Class 2 for 6H Fit Surface treatment: Bright Material: HSS High Speed Steel Chamfer No: 1,2 and 3, Serial no 4 and 5 Flute Geometry: Straight Flutes
ISO529