What size nuts for fan clutch?

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I can't find the 90179-08023; I'm using Ourisman's online EPC. Will the 94180-40600 (locknut) work?

Or the 90179-08175 (that's the EGR nut; I think it's a locknut, too)?

At one time, I seem to remember the fan clutch nuts (and the battery hold down bar clamp nuts) being listed at least in the EPC, as "mirror assy nut", but I never could find a model to associate with that. Maybe I'm misremembering.
 
The EPC I'm using says 94180-40600 is the fan clutch locknut; PartSouq says it holds the windows on the roof of the LiteAce:
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I love technology.
 
Those are not flange nuts. You really want flange nuts. I generally recommend 90179-08123. These have really nice serrations on the backside of the flange portion of the nut. Lock it into the fan clutch base.
Ok thanks! These were the ones partsouq had on the schematic. These should at least be a bit better for me. The previous owner left me with mismatched sizes.
 
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