Sorry, can't help
. I would just spend the evening searching the web.
Dacromet coating is specified by Rover for various fasteners and their part numbers fully describe the screw, bolt etc. Trouble is, I can't remember the codes
and buying single bolts from a Rover dealer would be too expensive anyway
.
You could perhaps contact a metal coating company and have some standard fixings coated, or just stick with zinc and use plenty of grease
.
