Self Locking Acorn nut
Acorn nuts are the finishing touch on 70s motorcycles. We sell chrome or stainless versions (which look great if you polish them) but we can get any kind of finish.
Acorn nuts come in standard shape and thread pitch size, but also with a thin pitch thread for M10 and M16 sizes. Make sure to choose the right one!
Japanese motorcycles usually use fine pitches for M10 and above. So you may need M10 x 1.25 and M12 x 1.25 which are not common in hardware stores and overpriced in bike shops.
Lock Nut Acorn
M8 acorn lock nut in zinc platting can replace Kawasaki part 92019-013 for the footrest of the Z1 for example.