Larry wrote:

I need 2 low profile nuts as noted above for my lower engine mounts.
Can't seem to locate them anywhere. Aircraft Spruce does not carry them
and they say they are only made for specific aircraft application. Any
ideas where I can find them? Thanks.

Larry/San Diego
Larry:
You are only going to find industry standard hardware.
Go to McMasterCarr (they have their entire catalog on line).
The posting w/ the nuts section also gives all the dimensions.
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FXS_at_beechhurst.com