The Bolt, Flange (4h7) is the most widely applied product in the XJ650 MAXIM 1980 (A) USA CRANKCASE ( ten times ).
The lowest price component in this Crankcase parts-list fiche is the Screw (4h7).
A sample from the products for the Crankcase include: Pin, Dowel, Bolt, Hexagon Socket (1xl), O-ring (1l9), Bolt, Cylinder Holding 3.