This standard is supplementary to AS 41 'Propeller Shaft Ends, Single Rotation', and AS 91 'Propeller Shaft Ends, Dual Rotation (Propeller Supplied Bearing)'. It is applicable to all engines that incorporate two-speed propeller reduction gears.
This Aerospace Information Report (AIR) is written as an aid for locating and identifying various fitting designs and configurations that are designated as standard parts.
This Aerospace Standard establishes the details of the maximum and minimum thread profile and tolerance classes for the metric 60° screw threads recommended for use in the aerospace industry for metric module bolts and nuts.
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.