HMMWV Fastener Finish?

[HoveringHMMWV]

When purchasing the various OEM fasteners, I've noticed that their finish is quite dull compared to the zinc plated ones found at the local hardware store. Is the OEM fastener finish considered Passivated? Other than simply painting, is there a way to replicate this dull finish using the zinc plated ones from the local hardware store?
Thnx in advance.

 

[Mogman]

I have toyed with the thought of Parkerizing the fasteners for my FAV project, the process is pretty easy and I am already set up for gun refinishing.
The process infuses oil into the surface of the metal giving it a tough and fairly corrosion resistant finish.
The only issue is the metal must be "virgin" so I am not sure how hard removing the original plating will be.
Parkerizing can be done in several "colors" from grey to black to green.
The military used to be big on cadmium which is a dull silver finish, I am not sure if that is the case any more as cadmium is a big taboo in the US as it is considered a hazardous material, but of course the "government" can ignore the rules the rest of up have to live by, there is a process called "copy cad" which mimics the cadmium finish, but again you must start with a "virgin" surface.

Search results

caswellplating.com

 

[Mogman]

You might be able to dull the surface with a quick acid bath...

 

[TruckGuy]

OEM fasteners have a Zinc-Aluminum coating. I've ordered them from mcmaster carr. If you have the option to order that, you're good to go.

 

[87cr250r]

Check out Magni Coatings or Dacromet for more info.

 

[Red6]

OEM fasteners have a Zinc-Aluminum coating. I've ordered them from mcmaster carr. If you have the option to order that, you're good to go.

I love ordering from McMaster-Carr, they have all types of fasteners