Specially tightened M10x1 nut with matching spring washer for fastening the clutch on kickstart engines.
Nostalgic product for the highest demands of the quality brand swiing®.
| Manufacturer | swiing® revival parts | 
| Material | Steel | 
| Surface | galvanized (blue) | 
| Thread type | MF10x1 (fine pitch thread) | 
| Drive | External hexagon | 
| Height | 5 mm | 
| Width across flats | 19 mm | 
| Strength class | 8 | 
| Puch | E50 | 
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