Screw M8x20 for fastening the crank to the pedal axle suitable for the following mopeds with Beta 521 engine:
Thread: M8x1 
Thread length: 20 mm 
Original spare part number: P8089
| Manufacturer | Pony | 
| Drive | External hexagon | 
| Screw head | Hexagon | 
| Thread type | MF8x1 (fine pitch thread) | 
| Thread length | 20 mm | 
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) | 
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