The MMC engine build up manual used when replacing the HD drive with a Centa unit states 170 ft/lbs.
That's on a 'half nut' which is actually a 2/3rd nut if comparing length.
That's with a flat washer/star washer and no Loctite.
One assumes this utilises at least a fresh unused star washer and perhaps a new flat washer and/or nut...all of which in theory would seem to produce a new "positive lock".
Is 440 ft/lbs with no star washer in the particular environment better/worse?