Dadi e viti Pearl
You can never have enough spare parts. The Pearl KB-610 key bolt can be used in your hi-hat clutch or on you pedals.
With this Pearl M-8W-2 set of two wing nuts, you can mount your cymbals on a stand.
With this set of replacement Pearl M-8RN knurled round nuts you'll always have some spares, should some of the little blighters go missing.
This is a replacement Pearl UGN-8L Ultra Grip wing nut.