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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Mon 24, 2022 5:29 pm 
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Location: Greater Boston, MA
Location: Greater Boston, MA
I'd be interested in a few as well.


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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Mon 24, 2022 7:46 pm 
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Location: Peekskill, NY
Flat knurled bottom piece - the model 20s did not have those so I'll have to get some design details, but those could be done as well. Just looked close at the tube island in the
photo above to see what was being talked about.


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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Tue 25, 2022 1:28 am 
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Location: Peekskill, NY
If somebody could supply the thickness and OD over the knurled portion I could do those as well. This would require a dial or digital caliper to get the dimensions to about a thousanth of an inch.


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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Tue 25, 2022 2:34 am 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 4184
Location: Boston, Massachusetts
1/8" thick
7/16" diameter

The last guy who sold them, sold the two pieces together.

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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Tue 25, 2022 4:08 pm 
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Joined: Mar Wed 16, 2011 9:44 pm
Posts: 2540
Location: Peekskill, NY
Learned something yesterday: my big-box 20 chassis actually uses those thin knurled nuts under the thumbscrews!

So yes, the thickness is 0.125 inch and the OD over the knurling is about 0.445 inch which means the diameter before
the knurl is indeed probably 7/16.

I'll make up some of those as well.


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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Thu 27, 2022 4:00 pm 
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Joined: Mar Wed 16, 2011 9:44 pm
Posts: 2540
Location: Peekskill, NY
Here's the prototype design for the 1/8 inch thick nut. Original with patina, repro, without.
I will probably offer these per each, not as a pair as there are probably a lot of folks who just
need the domed thumbscrew and not the thinner nut.


Attachments:
AK_TN_2.JPG
AK_TN_2.JPG [ 314.27 KiB | Viewed 804 times ]
AK_TN_3.JPG
AK_TN_3.JPG [ 330.08 KiB | Viewed 804 times ]
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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Thu 27, 2022 4:55 pm 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 4184
Location: Boston, Massachusetts
jim rozen wrote:
Here's the prototype design for the 1/8 inch thick nut. Original with patina, repro, without.
I will probably offer these per each, not as a pair as there are probably a lot of folks who just
need the domed thumbscrew and not the thinner nut.


I will take twelve of each

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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Thu 27, 2022 5:42 pm 
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Joined: Mar Wed 16, 2011 9:44 pm
Posts: 2540
Location: Peekskill, NY
OK, I am going to do this the right way and put up a posting on the for-sale section, with all the details.

Jim


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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jan Thu 27, 2022 6:00 pm 
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Joined: May Mon 25, 2020 6:37 pm
Posts: 1499
Location: Greater Boston, MA
Location: Greater Boston, MA
jim rozen wrote:
I will probably offer these per each, not as a pair as there are probably a lot of folks who just
need the domed thumbscrew and not the thinner nut.
They look great!

Agree offering per each makes sense, maybe with some sort of group/volume discount. 8)


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 Post subject: Re: Atwater Kent Repro Thumb Nuts
PostPosted: Jun Thu 02, 2022 7:36 pm 
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Joined: Sep Mon 18, 2017 1:23 am
Posts: 9394
Location: Plymouth, MI
Jims thumbnuts are perfect, great job Jim!

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Museum Curator
https://roaringtwentiesantiqueradiomuseum.com/


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