On Saturday, 24 October 2020 08:40:51 UTC+1, PeterC wrote:
I've a couple of desk lamps with the domed push-button switches and one is
rather glued together and getting more fragile.
Eventually I managed to find something on Ebay - tried all sorts of search
terms to exclude wrong items. Needs to have screw terminals and 12mm thread;

From the data sheet this one from CPC looks to fit a 12mm hole
https://cpc.farnell.com/unbranded/ab...off/dp/SW05520


Manufacturer: PRO ELEC
Manufacturer Part No: PELR0258
Order Code: SW05520

Owain