Schaller strap locks

[eddie masters]

Does anyone know what size and type of thread is on the Schaller strap lock?

 (lost nut)

[pete.young]

Size is 10mm but it's a fine thread.

 

It'll still work without the nut. Put the strap on the button, then clip the straplock onto the button on top of it.

[tauzero]

Banzai Music may be able to help - I've bought Schaller spare parts from them before, though they only seem to have the washers, not the nuts.