On this parts fiche the Bolt-flanged-small,8x is the most specified component.
A sample from the products for the Seat include: Bolt,socket,6x14, Washer,6.5x17x1, Bolt-flanged-small,8x, Band,seat,black.
The most reasonably priced component used on the Klx125cdf 2013 Europe,middle East,africa Seat is the Bolt,socket,6x14.