With a quantity of four pieces, the Washer,plain,6mm is the most used part in the TAILLIGHT(CBR1000RRA,B/RA A,B) diagram.
The Screw-washer 4x16 is the cheapest item from this partsfiche.
Some items from this specific schematic: Back Plate,number, Nut,flange,6mm, Unit,tail Light, Bolt,special 6x8.