3/16 would be imperial, or standard, as far as I can tell.. :eek13:can you be a little more specific on the model of bassman??
FWIW, i know that when i swapped out my speakers in the cab of my '66 blackface bassman, i got lucky that my dad has owned british cars for a long time.... the nuts were a british standard size!! I don't know if they even make tools that size anymore. I wanna say it was a british standard 3/16ths, but i could be wrong.
3/16 would be imperial, or standard, as far as I can tell.. :eek13:
Strange.Well, when i was doing this i tried both imperial and metric, and neither would fit. My dad dug out his british standard sockets, which i believe have the same #s as imperial, however they are different sizes.
Strange.
I find it hard to believe that there were no sockets in metric OR imperial that would fit though!!
i think they need to be tightened