Jon Elson wrote:
Christopher Tidy wrote:

I bought an old lamp and rewired it. Not sure of the age or origin,
but it looks Art Deco. Here are some pictures:
https://www.flickr.com/photos/138493...7650682178678/

I had to remove the screws to rewire the lamp. Some of the screws
were hard to remove and the slots got damaged. Now I'd like to
replace the screws, but they're a really weird size. Here are the
details:

- Brass screw, slotted round head
- Length: 8 mm
- Diameter: 3.70 mm
- Pitch 0.78 mm (as best as I can measure)

Here's what they aren't (because I've tried and they don't fit):

- #6-32 UNC
- #8-32 UNC
- 5/32" British Standard Whitworth
- 4 BA
- M4
There are some "deprecated" UN threads that haven't peen seen in ages.
A couple I know off the top of my head are 6-48 and 12-32.

The 6-48 is common on guitars.

Jon

Common on scope mounts too .

--
Snag