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Standard ASME B1.21M:1997(R2023) 1991 preview

ASME B1.21M:1997(R2023)

Metric Screw Threads: MJ Profile

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STANDARD published on 1991


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The information about the standard:

Designation standards: ASME B1.21M:1997(R2023)
Publication date standards: 1991
SKU: NS-1207903
The number of pages: 68
Approximate weight : 204 g (0.45 lbs)
Country: American technical standard
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Annotation of standard text ASME B1.21M:1997(R2023) :

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

Latest update: 2025-12-15 (Number of items: 2 252 206)
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