ERG valve studs and manifold question for 1990 300SE

Auto: 1990 300SE gas engine
The EGR valve is attached to the manifold using two studs. The threads of one stud are in poor shape; I tried to repair it with a die, but it's not going
well and if it's not too much trouble I'd like to just replace the entire stud.
Is the stud threaded on the mainfold side? If so, is it a reverse thread (clockwise turn removes it)? I could just start twisting but I don't want to break it off. Thanks.
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