Replacement Screws for carbs - stainless or zinc coated?

[lljjmm]

Like to replace the screws on the carbs.  Are stainless  screws preferred over  zinc coated?

Reason I ask is that doesn't the stainless react with the aluminum.

This size correct?     M5  x  .8   X  16mm


Thanks

[salty1]

Redeye sells them.
https://sites.google.com/site/valkparts/
I see no reason why SS won't work.

[Brian]

I stayed with zinc only for the shear fact that the carbs are a zinc product. This way it will minimize the galvanic action between the two dissimilar metals. I had to order the screws from Fastenal as all I could find here was Stainless, chrome and black steel in this size and an allen cap screw. Beware of Fastenal as they charged me $7.00 for the special order for shipping and handling on $4.00 worth of screws. The stupid me didn't pay up front and have them mailed to the house. The only good thing is it was on my home after work. And then to make matters worst, I lost one of the screws or else they shorted me one. I counted then at the store before leaving and swear there was 18 in plastic bag. Now one carb still has the OEM Phillips head screw. I thought about just buying a box and offering them to the membership here at cost and something for mailing. If you need to order them I suggest getting 19 or 20 for the screw that decides to run away.

[Patrick]

I guess I can't say for sure what our carburetors are made from, but, I try to use anti-siezed Stainless when available. I try to anti-seize about everything and haven't had an issue I can remember.

[97Valk_CT_Euless]

FWIW We use stainless on aluminum in racing outboards. The stainless and aluminum don't seem to react and sieze like steel. Do NOT use stainless on stainless! Unless youre sure theyre different grades! They WILL sieze! Can't say that galvanized would, but the galvanizing eventually goes away in spots (that's why it works, it's sacrificial) so I think you could have rough spots at least eventually. In all likelihood it doesn't matter.

[Ricky-D]

Should stick with OEM screws.

They are very special screws with a yield strength to help eliminate stripping the threads in the very expensive carburetor body.

Careless now will cost a bunch.

***