A bit off-topic but I couldn't resist the "what they are called" theme:
The Weymouth company Eurofasteners closed some months ago – as its name implied it sold a very large range of engineering and general fastenings etc.
The business now renting the building, on an industrial-estate, has placed a probably heartfelt notice on the door, reading something close to this…
"No we do not know what has happened to Eurofasteners, nor where they have gone.
And we do not know where you can get one of those… try Screwfix."