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SAE MA1370A

Current

Current

The latest, up-to-date edition.

Screw Threads - MJ Profile, Metric

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-04-2024

€149.67
Excluding VAT

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.

DevelopmentNote
This version is now stabilized
DocumentType
Standard
Pages
39
ProductNote
This version is now stabilized
PublisherName
SAE International
Status
Current
Supersedes

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:aMJ basic profile and design profilesbStandard series of diameter-pitch combinations for nominal thread diameters from 1.6 to 200 mmcStandard thread classes and form tolerancesdFormulae for thread dimensions and toleranceseMethod of designating MJ threadsfInspection requirementgTables for selected diameter-pitch combinations for aerospace screws, bolts, nuts, shaft and bearing retaining screw threads, and fluid fittings thread sizeshTables for MJ screw threads limiting dimensions and tolerancesiSymbols for MJ thread dimensions and tolerances

SAE AS1337B Selected Aerospace Diameter Pitch Combinations of Metric 60° Screw Threads for Nuts and Bolts
SAE MA1566B Gaging Practice and Gage Requirements for MJ Metric Screw Threads
ISO 68:1973 ISO general purpose screw threads Basic profile
SAE AS1421A Aerospace Selected Diameter - Pitch Combinations of Metric 60° Screw Threads for Shaft or Bearing Retaining Screw Threads
SAE AS1338A Aerospace Metric 60° Screw Thread Profile and Tolerance Classes
ISO 1501:2009 ISO miniature screw threads

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