Standard for keys and keyways/keyseats design (Aircraft)

[Helepolis]

Hi all,

Is there an accepted standard (e.g. MIL, MS etc.) for designing keys and keyways/keyseats for aircraft components?
I need for designing a rectangular key with one end rounded.
Not sure if its relevant but the key material has to be stainless steel.

Google and various LLM's didn't help too much, the closest answer I got was that there isn't any particular standard for keys and ASME B17.1 is acceptable.
So I want to double check.

 

[rb1957]

I'll assume you've done the research, tho' I do think it odd that there isn't a MIL STD keyway.

If the ASTM defines a geometry, then great, but someone will have to stress it for your application.
Presumably you size a key to transmit an amount of torque ?

 

[3DDave]

The MIL specification was:

MS35756
KEY, WOODRUFF, STEEL ALLOY, WITH KEYWAY AND KEY SLOT DIMENSIONS (S/S BY NASM35756)

​

 

[WKTaylor]

The MIL specification was:

MS35756
KEY, WOODRUFF, STEEL ALLOY, WITH KEYWAY AND KEY SLOT DIMENSIONS (S/S BY NASM35756)

​

and also...

ASME B18.25.1M Square and Rectangular Keys and Keyways

ASME B18.25.2M Woodruff Keys and Keyways

AIA/NAS NA0139 KEYWAY AND KEY SLOT DIMENSIONS METRIC

 

[WKTaylor]

and also...

ASME B18.25.1M Square and Rectangular Keys and Keyways

ASME B18.25.2M Woodruff Keys and Keyways

AIA/NAS NA0139 KEYWAY AND KEY SLOT DIMENSIONS METRIC

OH... AND ALSO... for EVEN MORE giggles...

AS9841 KEY, WOODRUFF - CHAMFERED CRES AMS5640
NAS558 KEYS, SQUARE AND RECTANGULAR
MIL-STD-35-32 PINS AND KEYS
MIL-STD-1755 KEY AND PINS PREFERRED FOR DESIGN, LISTING OF