StainlessSteel bolts

DeltaRed · Feb 8, 2014

I just found some SS bolts in a bucket of bolts.How strongwould they Be?Compared to GR 2-5-8?The head is smooth.Thanks,Steve

Wheat Farmer · Feb 8, 2014

Good question, can't wait to hear some info. I always thought they were only for the none rust. You have to be careful buying small hooks etc etc because they carry both. Big price different. The guy asked be why I needed the SS. Put them back.

waltdavies · Feb 8, 2014

Stainless steel bolts are marked with two slashes at 90 deg.
I would be very wary of ones that are not marked. Also they are about as strong as a brass bolt maybe a little more. Not good for anything that needs to be bolted strongly.
Walt

Bob · Feb 8, 2014

.
ONE mans ideas...

Jerry W · Feb 8, 2014

Never use stainless bolts unless for some reason the application needs stainless such as caustic or corrosion. If you need a good bolt use a grade 8 steel. Jerry

jm. · Feb 8, 2014

I can,t argue on how strong but I know here on the river most boat docks are built will ss fastners if the folks can afford it. At least keeps the rust down for awhile.

Bob Bancroft · Feb 8, 2014

Not very strong. Not as good as a grade 5. Only for rust resistance.
For some reason the strength of SS is a common misconception.
Even the very experienced shop where I get dozer parts/work put a small SS bolt in a wear strip. Fortunately they told me about it. I checked it as soon as I got home, and sure enough, it was already stretched out of shape just from tightening.

rustred · Feb 8, 2014

only good for bolting fenders and sheet metal on restored tractors.

Donaldinky · Feb 8, 2014

I work around food plants we used SS bolts. I forgot but u can look at the heads like regulor bolts .u can get harden SS bolts. I for got what the marking r. Have some in the shop haft to look.

Anonymous-0 · Feb 8, 2014

At the plant I vas employed till I retired used all stainless steel, the bolts included.
When using stainless bolts and nuts together to keep from gaulding the threads ve used never seze on all bolt threads.

dpendzic · Feb 8, 2014

stainless steel comes in many grades--the more higher strength is 304--but its strength is between grade 2 and grade 5 steel bolts.
I have always used 314 in salt water application as it is more corrosion resistant than 304, but not as strong.
So use a larger Diameter than you would use for steel or add more bolts to carry the load.

CharlieNJ · Feb 8, 2014

Good quality 316 stainless, like a marine grade, will not take a magnet, lower grades like 304 will slightly take a magnet. You would need a metallurgist to know exactly what you have, because there are many different grades. There are six or eight different grades of 316 alone.

Rollie NE PA · Feb 8, 2014

Along the lines of hardness, why is s.s. so hard to drill?
Somebody must know. I don't

Ed the wine farmer · Feb 8, 2014

This ones for Rollie. SS is work hardening; therefor, the more you try to drill - the harder it gets. Ed

Kris Peterson · Feb 8, 2014

Since we're on the subject,Cat has plated bolts available.Rust resistant,high strength,probably better than stainless.Except for marine use work pretty good.I always use never seize on every bolt except bolts that recommend thread lock.

Rollie NE PA · Feb 9, 2014

Thanks Ed. I did a little research after posting. It is possible to get Stainless bolts that are hard as in tinsile strength and shear strength.

StainlessSteel bolts

DeltaRed

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Wheat Farmer

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waltdavies

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Bob

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Jerry W

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jm.

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Bob Bancroft

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rustred

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Donaldinky

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Anonymous-0

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dpendzic

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CharlieNJ

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Rollie NE PA

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Ed the wine farmer

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Kris Peterson

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Rollie NE PA

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