Check out any of the fourteen Front Caliper components enlisted.
Some items from this specific schematic: Bolt,socket,8x30, Piston Seal Ring, Cap-breather, Caliper-assy,fr,lh.
The Bolt,socket,8x30 is the most widely applied product in the EN400A2 VULCAN 1986 CANADA / LIQUID COOLED FRONT CALIPER ( two times ).