I've just had to reset the thermal cutout of my immersion heater. Whilst removing the cover, I've stupidly dropped the nut somewhere behind the tank. Fishing around with a magnet has pulled up all sorts of metal objects, but unfortunately not the nut.
The long threaded screw/bolt in the above picture goes through the hole in the cap. The nut then secures the cap in place.
Will this screw (or threaded bolt, I suppose) normally be a standard size? If I were to try and buy a replacement, what should I be searching for? Or will I have to get hold of some calipers and measure the darn thing?
Best Answer
There's no reason it would not be a locally standard size (given a British location based on the label, presumably metric or pre-metric British Standard threading) so some basic measurements (no calipers required, if you are willing to use a ruler carefully and buy 2 or 3 nuts, one of which will be the right one) and a trip to the hardware store should find a nut to fit.
You might also try putting fine net mesh over a vacuum cleaner inlet and vacuuming for the nut, first.