In this schematic the "Nut,hex.,8mm" is used most often.
A sample from the products for the Swingarm/chain Case include: Arm.assy.swing., Dust Seal,22x35x7, Bolt Rr.fork Pivo, B/brg Rad N/com.
thirty-one components are shown in this Cb450s 1986 (g) Spain Swingarm/chain Case exploded diagram.