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Old 09-12-2013, 09:32 PM
  #16  
M. Requin
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jpitman is correct, this is a knuckle, not Acme, thread. Very few folks are familiar with it, so it is not surprising it was mislabeled by someone, even a "specialist". I can cut Acme threads on my lathe- simple stuff. I do not have a knuckle thread insert nor have I ever seen one.
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Old 09-12-2013, 09:32 PM
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Jetdriver69
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Ok Im wrong, just repeating what the bolt guy told me. Regardless, I DO NOT want a license plate up front and am getting an antique registration plate for my 82. Problem solved and very cheaply at that.
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Old 09-12-2013, 09:38 PM
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Originally Posted by Jetdriver69 View Post
Ok Im wrong, just repeating what the bolt guy told me. Regardless, I DO NOT want a license plate up front and am getting an antique registration plate for my 82. Problem solved and very cheaply at that.
I completely agree with that!
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Old 09-12-2013, 09:41 PM
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So I just had to find out how little I know and googled "knuckle thread insert", and now I have seen one, actually a bunch, at least in web images. I've fallen off horses before, including some high ones...
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Old 09-12-2013, 10:42 PM
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Tow hooks on my 2004 Cayenne S look identical to 928 units but thread is reversed. Odd.
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Old 09-13-2013, 01:56 AM
  #21  
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Acme is an easy mistake to make, as there are not many threads at 8 TPI in the relevant diameter range. I have found about the only thread mix that can work for short lengths is M5 (p=0.8mm) will fit US thread 10-32, as 0.8mm pitch = 31.75 TPI. In soft materials (eg composite , probably alloy) up to say 1/2 long the force required to screw in is not high.
jp 83 Euro S AT 55k
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Old 07-10-2016, 12:06 AM
  #22  
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Newer VW jettas have the same thread tow hooks in them just tried one here....
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Old 07-10-2016, 01:39 AM
  #23  
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Jettas have the same thread ...as which 928 hook? The early small dia (.6"), or the later larger(.8") thread?

jp 83 Euro S AT 56k
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Old 07-10-2016, 08:54 AM
  #24  
beran earms
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Could have obtained an extra stock hook and cut off what wasn't needed and then built off of that piece.
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