Refinishing original bolts and nuts

Faust

Member
I know how to get the rust off, but after electrolysis, to almost perfect, the original nuts and bolts started to rust again. Drat! I worked with a guy once that used to put metal parts into a chemical that looked like window washer fluid but it was a chemical that made steel parts totally black. I need a metal treatment tip for nuts and bolts. Id like to keep the originals on the Ford, all the new stuff is from Taiwan. Does anyone know how to redo a phos+oil finish of some type?
 
Try your local NAPA, they sell a product that oxidizes black,then seals to stop further rusting. Extenz was what it used to be called, but
I think they changed the name.
 
If I give nuts and bolts a Muriatic bath i rinse them with hot water, blot dry them with a paper towel and toss them in a can of light oil. I suppose diesel fuel would work too. After a night s soaking I spread them out on a paper towel and leave them oily till I use them. I have never tried the Napa product but it sounds like a better idea than mine.
 
(quoted from post at 16:31:50 10/06/19) I know how to get the rust off, but after electrolysis, to almost perfect, the original nuts and bolts started to rust again. Drat! I worked with a guy once that used to put metal parts into a chemical that looked like window washer fluid but it was a chemical that made steel parts totally black. I need a metal treatment tip for nuts and bolts. Id like to keep the originals on the Ford, all the new stuff is from Taiwan. Does anyone know how to redo a phos+oil finish of some type?

"used to put metal parts into a chemical that looked like window washer fluid but it was a chemical that made steel parts totally black"

You are describing EXACTLY the old bottle of DuPont Phosphoric Acid Etching Primer I have and how it works!
 
I use the phospho etch, dry then and wire brush off the powdery residue and immediately apply a self etching primer. Seems to work.
 

You want phosphoric acid rust converter. It changes the rust to iron phosphate which is black. If you have already removed the rust with something else you would need to rust them again.
 
Thank you all for your tips. I did phos soak and my opinion is that you have to do the electrolysis to get all the rust off
because the phos alone does not do the really bad rust by itself. I bought some Permetex rust remover at NAPA and if I
don't get the "look" I am going to a heated phos and oil finish, it a 20 minute soak in phos acid solution at 200F with
some steel wool and manganese in solution, dried, then oil. I spent hours getting the Ford White pieces prepped and painted
so I want the hardware to look as good, even though she's going back to work pulling wood and cutting pasture.
 
(quoted from post at 20:20:13 10/25/19) Thank you all for your tips. I did phos soak and my opinion is that you have to do the electrolysis to get all the rust off
because the phos alone does not do the really bad rust by itself. I bought some Permetex rust remover at NAPA and if I
don't get the "look" I am going to a heated phos and oil finish, it a 20 minute soak in phos acid solution at 200F with
some steel wool and manganese in solution, dried, then oil. I spent hours getting the Ford White pieces prepped and painted
so I want the hardware to look as good, even though she's going back to work pulling wood and cutting pasture.


Get new then. Black oxide coated from McMaster Carr, next next day delivery.
 
(quoted from post at 16:31:50 10/06/19) I know how to get the rust off, but after electrolysis, to almost perfect, the original nuts and bolts started to rust again. Drat! I worked with a guy once that used to put metal parts into a chemical that looked like window washer fluid but it was a chemical that made steel parts totally black. I need a metal treatment tip for nuts and bolts. Id like to keep the originals on the Ford, all the new stuff is from Taiwan. Does anyone know how to redo a phos+oil finish of some type?

Black oxide. Kind of a pre-rust thing, but it stops any further rust.
 
The Eastwood Afterblast is a good prep product. It also helps the paint to adhere on the surface really well.
 

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