|
Posted by Tom Miller on April 9, 2006, 7:56 pm
Please log in for more thread options
message
> So, I want to fasten things together outside
> where they will see all the weather that is
> there. In order to be able to disassemble the
> components years later, I use stainless steel
> bolts and nuts that I buy from Fastenal. Sounds
> good to me, but guess what? The threads gall
> when I have to take an assembly apart just a few
> months after they are installed! Almost every
> bolt has this problem.
> Smarter now, I have heard that "you can't do
> that"! You can use stainless steel bolts, but
> with plain steel plated nuts, for instance.
>
> My question: To those of you who know what I'm
> talking about, what other solutions do you use?
>
> Pete Stanaitis
> ----------------------------------
Try wrapping the thread with Teflon plumbers tape
before you screw it in. There is a compound that
you can buy with Teflon in it that is brushed on
but I can't remember the brand name. Teflon tape
can be found at most hardware shops.
Tom
|
|
Posted by c.henry on April 9, 2006, 11:02 pm
Please log in for more thread options
stainless on stainless mthreaded fasteners should be put together with a
quality antisieze [ spelling ]
never with out , unless you want a semipermanent installation
|
|
Posted by Joseph Gwinn on April 9, 2006, 11:51 pm
Please log in for more thread options
> message
> > So, I want to fasten things together outside
> > where they will see all the weather that is
> > there. In order to be able to disassemble the
> > components years later, I use stainless steel
> > bolts and nuts that I buy from Fastenal. Sounds
> > good to me, but guess what? The threads gall
> > when I have to take an assembly apart just a few
> > months after they are installed! Almost every
> > bolt has this problem.
> > Smarter now, I have heard that "you can't do
> > that"! You can use stainless steel bolts, but
> > with plain steel plated nuts, for instance.
> >
> > My question: To those of you who know what I'm
> > talking about, what other solutions do you use?
> >
> > Pete Stanaitis
> > ----------------------------------
>
> Try wrapping the thread with Teflon plumbers tape
> before you screw it in. There is a compound that
> you can buy with Teflon in it that is brushed on
> but I can't remember the brand name. Teflon tape
> can be found at most hardware shops.
Hardware and plumbing supply stores sell teflon-loaded pipe thread
sealant. Is this what you mean?
Joe Gwinn
|
|
Posted by Koz on April 10, 2006, 3:17 pm
Please log in for more thread options
spaco wrote:
> So, I want to fasten things together outside where they will see all
> the weather that is there. In order to be able to disassemble the
> components years later, I use stainless steel bolts and nuts that I
> buy from Fastenal. Sounds good to me, but guess what? The threads
> gall when I have to take an assembly apart just a few months after
> they are installed! Almost every bolt has this problem.
> Smarter now, I have heard that "you can't do that"! You can use
> stainless steel bolts, but with plain steel plated nuts, for instance.
>
> My question: To those of you who know what I'm talking about, what
> other solutions do you use?
>
> Pete Stanaitis
> ----------------------------------
As other's have said, a good anti-seize compound. Most stainless
materials gall at very close to 2000 PSI...this includes 17-4 and 17-7
precipitation hardened parts. It doesn't take much pressure to hit that
2000 psi level on fasteners considering the ramp-action of the threads
as well as the relatively small contact area.
Anyway..just wanted to throw out that 2000 PSI number as food for
thought in the group. If you calculate backwards based on bearing area
and torque on the nuts, you'll see how little torque it takes to gall
out a stainless bolt/nut. If it gets really critcal and you have deep
pockets, Nitronic 60 stainless is available at about $ 12.00 per pound
(at least that's what it used to be). Nitronic 60 doesn't gall until
you get to about 50,000 PSI and is used on bridge pins and critical
stuff like that where galling could really muck up the works.
Koz
|
|
Posted by on April 10, 2006, 9:36 pm
Please log in for more thread options wrote:
>So, I want to fasten things together outside where they will see all the
> weather that is there. In order to be able to disassemble the
>components years later, I use stainless steel bolts and nuts that I buy
>from Fastenal. Sounds good to me, but guess what? The threads gall
>when I have to take an assembly apart just a few months after they are
>installed! Almost every bolt has this problem.
> Smarter now, I have heard that "you can't do that"! You can use
>stainless steel bolts, but with plain steel plated nuts, for instance.
>
>My question: To those of you who know what I'm talking about, what
>other solutions do you use?
>
>Pete Stanaitis
>----------------------------------
SS bolts with brass nuts, or use copper or silver bearing anti-seize.
I like the brass nuts on stainless bolts.
*** Free account sponsored by SecureIX.com ***
*** Encrypt your Internet usage with a free VPN account from
http://www.SecureIX.com ***
|
| Similar Threads | Posted | | Shining stainless steel | September 5, 2006, 8:46 pm |
| Bending 304 stainless steel | October 23, 2006, 9:23 am |
| Bending 4mm dia stainless steel rod | December 5, 2006, 11:51 am |
| Polishing stainless steel | October 30, 2007, 1:40 pm |
| Need Help - Stainless Steel Tubing | March 20, 2006, 10:45 pm |
| Polishing stainless steel | March 25, 2006, 8:48 am |
| CONE FROM STAINLESS STEEL | March 5, 2008, 7:51 pm |
| Re: Building a Stainless Steel BBQ Grill | August 26, 2006, 10:49 pm |
| Silver Soldering Stainless Steel | October 18, 2006, 1:53 pm |
| Stainless steel & muriatic acid | March 16, 2007, 12:07 am |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap
> where they will see all the weather that is
> there. In order to be able to disassemble the
> components years later, I use stainless steel
> bolts and nuts that I buy from Fastenal. Sounds
> good to me, but guess what? The threads gall
> when I have to take an assembly apart just a few
> months after they are installed! Almost every
> bolt has this problem.
> Smarter now, I have heard that "you can't do
> that"! You can use stainless steel bolts, but
> with plain steel plated nuts, for instance.
>
> My question: To those of you who know what I'm
> talking about, what other solutions do you use?
>
> Pete Stanaitis
> ----------------------------------