M8 JIS Sechskantmutter mit eingebauter Federscheibe, entspricht 92017-013, Zink, 12A/F
This is the older style locknut used on older Motorcycles. M8 lock nut Japanese Industrial Standard Nuts with Built in Spring Washer. Spanner size 12mm, Pitch 1.25mm. Washer DIA 14mm. Washer Thickness 2.5mm.