Cam centre wheel bolt and washer short or long type
- Short type is used in the cast iron cylinders
 - Long type used in alloy cylinders
 
 
Length worked out from under head to end
Specifications:
- M8 thread
 - 10mm hex
 - 20.5mm Length (short)
 - 27.5mm Length (long)
 - Might be copper washer depending on stock