TubaForum.net

I’ve tried the few lyre screws I have on hand and struck out.

Anyone happen to know what screw size is used for a B&S tuba lyre box?

Anyone know a source for purchase? A silver one would be extra dandy!

Thanks for any help.

Any chance it's just 3 mm? (I don't know of any 3 mm thumb screws that you can just buy from Battle Creek or Elkhorn...)

https://www.ebay.com/itm/316008436741