Metric Screw Threads: MJ Profile
STANDARD published on 1991
Designation standards: ASME B1.21M:1997(R2023)
Publication date standards: 1991
The number of pages: 68
Approximate weight : 204 g (0.45 lbs)
Country: American technical standard
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: 2023