A sample from the products for the E-5 include: O Ring,21.5m/m, Finder,oil Level, Bolt,flange,6x40, O-ring,13.8x2.5.
The thirteen Vf400f 1982 (c) Japan E-5 component parts are all listed in this schematic.
With ten applications this Bolt,flg,sh. 6x32 is the most specified part.