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Tiny hole in AN swivel adapter

JoopSJ

Well Known Member
I tried to figure it out myself...
What is the purpose of this tiny hole in this swivel adapter? (See picture)
Thank you.

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safety wire. .

That's what I thought first, but the hole does not go trough, there is a kind of pin in it.
I think Mike is correct

There is a pin/dimple in there that keeps the nut on the inner shank.

Mike, is there supposed to be swiveling action *after* the nut is tighten, or is the swiveling action only intended to align things properly before tightening?
 
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If you're talking about a Heim joint ( the pic link doesn't work ) it's witness hole. It's so you can see the threads minimum depth.
 
If you're talking about a Heim joint ( the pic link doesn't work ) it's witness hole. It's so you can see the threads minimum depth.

It?s a 45?deg fuel fitting B nut. I know you know but you can?t see the pic. :)
 
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