Mark A wrote:
Stuart Noble wrote:

Aren't they called dowel screws?

Would seem so. That explains why I didn't get much from trying to search
Screwfix with "double ended screws".

Usage varies no doubt, but in my book a 'dowel screw' is a double-ended
woodscrew. The item with a woodscrew at one end and a parallel thread
machine screw at the other is called a 'speaker screw' - presumably from
its original use for fixing loudspeaker drive units into wooden cabinets.

--
Andy