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Old 05-24-2011, 04:16 PM   #1
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Need help with a set screw of my lamp socket


Hello,

I have some vintage lamp sockets Made in U.S.A., but I am missing set screws for a few sockets,
I checked pitch of its part by a inch screw pitch gauge, it is 40 threads per inch (not 8-32)
I also checked all thread diameter is approx.0.1595" I want to know the correct size
of set screw thread of lamp socket, Please let me know about it

http://www.dresdendoll.from.tv/setscrew/DSC04150.JPG
http://www.dresdendoll.from.tv/setscrew/DSC04151.JPG
http://www.dresdendoll.from.tv/setscrew/DSC04153.JPG

Thanks
Lenoirberg













Last edited by lenoirberg; 05-24-2011 at 04:28 PM.
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Old 05-24-2011, 07:54 PM   #2
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Need help with a set screw of my lamp socket


Usually, 40 threads per inch would be associated with a #4 screw, but with a diameter of .159 inches, you might be dealing with a #6 there.

Some hardware stores have bins with small compartments that feature hard-to-find small screws and accessories ... I'd start looking there.

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Old 05-27-2011, 08:06 PM   #3
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Need help with a set screw of my lamp socket


Hi KB, Thanks for your reply, I am in a minor disturbance, I think a #6-40 is a little bit small, I wonder if it is not #8-40 UNS tpi
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