Rust proofing after cutting threads

What kind, options, etc.

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Scot2640
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Rust proofing after cutting threads

Postby Scot2640 » Tue Apr 04, 2017 1:36 pm

I need to make up several very long bolts for my build (some as big as 40 inches). I found a good price on 5/8" galvanized bar stock that I can cut to length and thread to my specifications. I don't want to use SB rod, sticker shock!

After I cut the threads, and there by remove all the galvanizing from the bar stock in the threaded area, what is the best way to treat the exposed steel to prevent/avoid the threads rusting? Epoxy? Paint?

appreciate the input.
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Bill Edmundson
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Re: Rust proofing after cutting threads

Postby Bill Edmundson » Tue Apr 04, 2017 1:56 pm

Scott

Best I can do for you. https://www.fastenal.com/products/faste ... categoryl1: Fasteners"|~ ~|categoryl2:"600169 Rods 9and Studs"|~ ~|categoryl3:"600173 Threaded Rods"|~ ~|sattr02:^3/8"-16$|~

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
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SunFun
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Re: Rust proofing after cutting threads

Postby SunFun » Tue Apr 04, 2017 2:59 pm

At my last job in a sheet-metal shop, we used to weld galvanized sheet metal often.
Some of the customers required us to spray ZRC Zinc on the welded areas that we ground or burned off the galvanizing in the weld process.
I don't know how it performed over time, but we charged them extra for it and they still wanted it, so I gotta believe it did some good.

https://www.amazon.com/ZRC-Galvilite-Ga ... QM1FX567TC

rleete
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Re: Rust proofing after cutting threads

Postby rleete » Wed Apr 05, 2017 7:32 am

Plain old Home Depot threaded rod is available in "stainless". Not great stuff (I'm guessing 304 series), but it's better than plain steel.

Another solution, if you've already cut your bar, is to try something like plasti dip. Available at HD as well.

If you need to keep the threads clean, I suggest at least trying a gun bluing solution and oiling. Available at most sporting good stores.

slug
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Re: Rust proofing after cutting threads

Postby slug » Wed Apr 05, 2017 9:00 am

Loctite makes a never sieze product that has either a copper or some other base that works well, especially keeping SS threads from siezing.

Doug


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