Has anyone done any Parkerizing (black phosphating) of small parts and bolts?

I was doing a little research on the web and found a number of kit suppliers and was wondering if anyone here had any experience with this process.

I'm restoring an old ('50's) Clausing drill press that was given to me and many of the fittings on it were either gun-blued or phospated. Never realized that the process is what many of the bits and pieces on my old trucks were finished with.


'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton

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