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SAE MA 1421A-2018
Aerospace Selected Diameter-Pitch Combinations of Metric 60° Screw Threads for Shaft or Bearing Retaining Screw Threads
This SAE Aerospace Standard (MA) establishes the diameter-pitch combinations of ISO metric 60° screw threads recommended for use in the aerospace industry for metric module shaft or bearing retaining screw threads.
Society of Automotive Engineers [sae]