I have always spare cymbal wing nuts in almost every pocket because while gigging you never know.
These Tama ones are more knobs than "wing nuts" and I find them perfect for all situations and for "all" I really mean "all": for instance, you are using a very deep bell china and sometimes the normal nut does not fit because it's too big... so these CM8P are perfect for holding your stuff in place.
And, moreover, they fit most of the cymbal stand threads on the market. Simply highly recommended!