[Milsurplus] replacing black oxide screws /with/ blackened zinc plated screws

[Michael Hanz]

I have several of the Brownells bluing/blackening products here that I 
have used for this purpose, Hutch.  One or more may work on one and not 
on another, depending on the plating process and material.

I wouldn't try just bluing the heads - there may be interactions with 
the aluminum panel that you won't appreciate.  Just throw the entire 
screw(s) into a jar with one of the chemicals and see how it works.  I 
also got a product from Caswell Plating that does a good job on _some_ 
stainless screws, but again, there are a number of different kinds of 
stainless steels, and it isn't a cover-all. You might want to consider 
just getting new factory blackened screws from McMaster-Carr.  It's what 
I do if I want to make complete makeover of a set.

       73,
  - Mike  KC4TOS

On 10/27/2020 9:15 PM, jphutch60bj wrote:
> Need to replace a few lost black oxide screws with zinc plated 
> screws.   I really only need to "blacken" the screw heads.
>
> To accomplish the task I am thinking of Gun Bluing just the heads of 
> the zinc plated screws, using a Cold Gun Bluing solution.
>
> Anyone gone down this road before that may have some tips or tricks.
>
> Thanks for you assistance.
>
> Hutch
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