The only exhaust stud nuts that I have ever seen that were totally
satisfactory were brass nuts. Not cheap brass, but high quality brass.
Fairly hard. The particular application was on the exhaust studs of
aircraft engines. The brass is soft enough to turn even after being in
place for lots of hours of use on a hot exhaust. Not supposed to use
them twice. The alternative was a specially alloyed heat-treated stud
nut. Very pricey. Brass nuts were pricey too.

I don't know of any reason why brass nuts could not be used in an
automotive application.

John Rodgers
88 GL Driver

gary hradek wrote:

>Fred,
>    The anti-seize is a greased base metal compound .
> The grease clearly gets cooked by the exhaust but the
>metal remains in the threads of the nuts and bolts and
>prevent the like metals"nut and bolt" from
>seizing"becoming one" by acting as a contaminent
>between the two surfaces.  Perhaps you should try a
>different type of anti-sieze?
>                        gary
>I have found that anti-seize is not any good on
>exhaust fasteners.
>The heat of the exhaust soon cooks it off and after
>short period it is
>like you put nothing on them at all.
>It is a good idea, I use it.
>But worthless on exhaust parts.
>Good Morning,
>Fred
>
>E-mail message
>
>
>__________________________________________________
>Do you Yahoo!?
>Yahoo! Tax Center - File online, calculators, forms, and more
>http://tax.yahoo.com
>
>
>