Metric Screw Threads: MJ Profile
NORMA vydána dne 1997
Označení normy: ASME B1.21M:1997(R2018)
Datum vydání normy: 1997
Počet stran: 68
Přibližná hmotnost: 204 g (0.45 liber)
Země: Americká technická norma
Kategorie: Technické normy ASME
This Standard establishes the basic triangular profile for the MJ thread form; provides a system of designations; lists the standard series of diameter/pitch combinations for diameters from 1.6 to 200 mm; and specifies limiting dimensions and tolerances. It specifies the characteristics of the MJ metric series of threads having a minimum 0.15011P radius at the root of the external thread, and also having the minor diameter of the external and internal threads increased above the ASME B1.13M-Metric Screw Threads: M Profile thread form to accommodate the external thread root radius.
Reaffirmed: 2018