<font color='black' size='5' face='Arial, Helvetica, sans-serif'><font face="Arial, Helvetica, sans-serif"><span style="font-size: 18pt;">Hi Sandy;</span></font>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">I took one of the connectors I have in the junque boxe, removed the screw in question, and it measures as follows:</div>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">Diameter of head: 0.153"</div>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">Total length: 0.175"</div>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">Across threads: 0.086" dia</div>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">Threaded stock length: 0.113" (approximately)</div>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">The threads are machine and not tapered, nor is the screw pointed - the end is flat. I will note that I have NOT put it under a microscope and counted threads per inch. It is certainly not a self-tapping or thread-cutting screw. </div>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">When comparing this to something available at McMaster, about the closest thing is a 2-56 flat head machine screw. That has threads that are 0.086" in diameter, and a head of 0.162". The size 1-72 screw is markedly smaller in each dimension. I am guessing since it is (was) manufactured by Amphenol in Chicago at the time, that it was not metric. </div>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">A problem for easily available screws from McMaster is the length. 2-56 FH is available in 1/8", 5/32" and 3/16" length, none of which are 0.175" long. I don't have any idea how deep the hole goes or is tapped. Probably a bit longer than the original screw. I guess you could try the 3/16" long, and if it will not fit, you could file the end down some to get it to 0.175" or so. </div>
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<div style="color: black; font-family: Arial, Helvetica, sans-serif; font-size: 18pt;">On mine, the flat head recesses quite a bit into the connector, so the difference between 153 and 162 thousandths is probably de minimus. May even take care of the extra length of the 3/16 screw. </div>
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<div><font face="Arial, Helvetica, sans-serif"><span style="font-size: 18pt;">The zinc-plated steel units from McMaster have part number </span></font></div>
<div><font face="Arial, Helvetica, sans-serif"><span style="font-size: 24px;">90273A050, $2.76 per 100. They also offer them in two varieties of stainless steel if you are going to keep the rig for three lifetimes. The 18-8 is only about twice the price, but 316 SS is about quadruple. Maybe you have a local model airplane shop that has them in smaller quantities, but I wouldn't hunt to long to save $2.76! Ebay doesn't seem to be any cheaper, and has less selection.</span></font></div>
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<div><font face="Arial, Helvetica, sans-serif"><span style="font-size: 24px;">I also have one connector in the junque boxe missing a screw, but no telling how long it will be until I use it. I'm not sure I have any green boxes that have that mating chassis connector on them anymore. </span></font></div>
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<div><font face="Arial, Helvetica, sans-serif"><span style="font-size: 24px;">Have a good holiday. Keep the green boxes glowing.</span></font></div>
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<div><font face="Arial, Helvetica, sans-serif"><span style="font-size: 24px;">73</span></font></div>
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<div><font face="Arial, Helvetica, sans-serif"><span style="font-size: 24px;">John...</span></font></div>
<div><font face="Arial, Helvetica, sans-serif"><span style="font-size: 24px;">WB4LNM</span></font></div>
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<div><font face="Arial, Helvetica, sans-serif"><span style="font-size: 24px;">"One of the Hams from Heath"</span></font></div>
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<div style="font-family:helvetica,arial;font-size:10pt;color:black"><blockquote style="border-left: 2px solid blue; padding-left: 3px;">Message: 1<br>
Date: Tue, 24 Nov 2015 15:06:21 -0500<br>
From: "Alexander N. Gerli" <<a href="mailto:ac1wye@gmail.com">ac1wye@gmail.com</a>><br>
To: <a href="mailto:heath@puck.nether.net">heath@puck.nether.net</a><br>
Cc: <a href="mailto:heathkit@mailman.qth.net">heathkit@mailman.qth.net</a><br>
Subject: [Heath] teeny tiny screws WTD<br>
Message-ID:<br>
<<a href="mailto:CACs0R21qU6YVqk6Nwjn2x_TB1Kqco6NSz-t8wifa0A0eE+rNaQ@mail.gmail.com">CACs0R21qU6YVqk6Nwjn2x_TB1Kqco6NSz-t8wifa0A0eE+rNaQ@mail.gmail.com</a>><br>
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Hi, gang! You all know the LITTLE flat-head short screw in the<br>
Heathkit/Amphenol 80MC2M mic connector, the one which holds the plastic<br>
connector and pins inside the shell? Some Straight, some Philips.<br>
<br>
Well, I find in my connector stash that I have three complete connectors<br>
that are MISSING that darn little screw (Finagle's Corollary to Murphy's<br>
Law). I know of a few places to look, BUT that's not much help unless I can<br>
identify the screw by its size. What is it? a #0 or a #1 maybe? Probably<br>
1/8" long. Does anybody on the List know?<br>
<br>
?73,?<br>
<br>
<br>
?Sandy AC1Y?<br>
<br>
<br>
Alexander N. Gerli, Sr.<br>
548 Allred Mill Road<br>
Mount Airy, NC 27030-2202</blockquote></div>
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