Hi Graeme,
The parts you have are zinc plated (I believe the drawing calls for 'ZN8-10
CHROMATE
PASSIVATE AND TOP COAT').
So, you don't need to paint these as the coating will protect them.
However, as Bud says, it is very easy to scratch this coating when working with
the parts. If you do scratch anything then I'd touch up with some zinc rich
primer or something like that. Also, as Bud says, the ACP 50 stuff is very good
and a light coating of this will protect the parts.
Phil
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