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This International Standard specifies the manufacturing tolerances on the threaded portion of taps for
producing the ISO metric threads of tolerance classes 4H to 8H and 4G to 6G as defined in
ISO/R 965-I to III (excluding, consequently, classes 7G and 8G considered as usually produced with ground
thread taps).
It is valid for the short taps specified in ISO/R 529 as well as for any other kind of ground thread taps with
the same diameters and pitches.
The internal threads produced with those taps are conventionally designated by the simplified
denomination of “nut” in agreement with the word used in ISO/R 965 for the general designation of all
internal threads.