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AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > Emerson 79646 - Head tilt shoulder screw - thread?

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 Posted: Sat Sep 8th, 2018 06:44 pm
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Dmitri Shuev
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I need to chase down threads for the head tilt shoulder screw in an Emerson 79646-AX - it got accidentally covered during powder coating, and I have almost wrecked the screw itself...

As best I can identify it's a 5/16-32 UNEF, however can someone confirm that this is exactly what it is?

Here in Canada hardly anybody carries fine machine screw taps, so I just want to be sure before ordering it and waiting for several weeks, only to find out it's something else...

Thank you,
Dmitri

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 Posted: Tue Sep 11th, 2018 12:04 pm
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Zachary Parr
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Hopefully you find that thread. I don't know if the "16 emersons had the same thread but hope you find it. I cant really guess the threads but I wish I could help. When you finish it post a picture of your restored fan. I would love to see it. 

Last edited on Tue Sep 11th, 2018 12:05 pm by Zachary Parr

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 Posted: Tue Sep 11th, 2018 02:28 pm
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Dmitri Shuev
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Zachary Parr wrote: Hopefully you find that thread. I don't know if the "16 emersons had the same thread but hope you find it. I cant really guess the threads but I wish I could help. When you finish it post a picture of your restored fan. I would love to see it. 
In the absence of replies I went ahead with my original assessment, and have ordered a 5/16-32 tap. It will be several weeks before it arrives, and then re-assembly can resume.

If there are no other hiccups, I will post a few pictures of the finished unit.

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 Posted: Thu Oct 11th, 2018 12:05 pm
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Dmitri Shuev
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A quick confirmation - the thread turned out to be indeed 5/16-32 UNEF. Chased it, all good now. On with the rest of the re-assembly.

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 Posted: Sun Oct 14th, 2018 09:58 pm
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Tom Newcity
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That's a handy tap to have when working on Emersons.  That same thread is also used for the collar screw-in latch pin assembly and the oil hole cover on the earlier Emersons. 

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