MA1370 Screw Threads - MJ Profile, Metric

Current

08/23/2018

Features
Issuing Committee
Scope
Content
This standard specifies the characteristics of the MJ profile metric series of screw threads, altered from ISO 68 M Profile, to include a mandatory controlled radius of 0.18042P to 0.15011P at the root of the external thread and with the minor diameter of both external and internal threads increased to provide a basic thread height of 0.5625H in order to accommodate the external thread maximum root radius. The following detailed requirements are included:
  1. a
    MJ basic profile and design profiles
  2. b
    Standard series of diameter-pitch combinations for nominal thread diameters from 1.6 to 200 mm
  3. c
    Standard thread classes and form tolerances
  4. d
    Formulae for thread dimensions and tolerances
  5. e
    Method of designating MJ threads
  6. f
    Inspection requirement
  7. g
    Tables for selected diameter-pitch combinations for aerospace screws, bolts, nuts, shaft and bearing retaining screw threads, and fluid fittings thread sizes
  8. h
    Tables for MJ screw threads limiting dimensions and tolerances
  9. i
    Symbols for MJ thread dimensions and tolerances
Rationale
Content
MA1370 has been reaffirmed to comply with the SAE five-year review policy.
Meta TagsDetails
DOI
https://doi.org/10.4271/MA1370
Pages
38
Citation
SAE International Technical Standard, Screw Threads - MJ Profile, Metric, SAE Standard MA1370, Reaffirmed August 2018, Issued January 1990, https://doi.org/10.4271/MA1370.
Additional Details
Publisher
Published
Aug 23, 2018
Product Code
MA1370
Content Type
Technical Standard
Status
Current
Language
English

Revisions