ISO 2857:1973 Preview
Ground thread taps for ISO metric threads of tolerances 4H to 8H and 4G to 6G coarse and fine pitches -- Manufacturing tolerances on the threaded portion
This standard was last reviewed and confirmed in 2016. Therefore this version remains current.
Is valid for the short taps specified in ISO 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 965 for the general designation of all internal threads.
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