M22x2.5 TAP SET

Metric ISO 529 HSS

HAND TAPS

Contains: Taper Second Bottom

These are straight flute general purpose tools which can be used for both machine or hand tapping.

They are generally the most economical tool for use on production runs, but are best on materials that produce chips, or where the swarf breaks readily.
Where deep holes are to be tapped, in materials which produce stringy swarf, other types of taps may be needed, especially for coarse threads.

Calculating tapping drill sizes.
As a rule of thumb, for Metric threads, the tapping drill can be calculated by
subtracting the pitch from the diameter of the thread.

Eg for an M5x0.75 thread the tapping drill is 5-0.75mm = 4.25mm.

For Imperial (inch) threads the tapping drill size is calculated in the same way,
diameter minus pitch.
Eg for 3/4.10 UNC pitch = 0.1, diameter = 0.75, tapping drill = 0.65 = 16.5mm.