Exhaust system question - square nut on flange removable?

Hi guys,

looking for some info.

Today I will be replacing my stock exhaust with a Afe exhaust on 2015 Tacoma TRD.

yesterday while under the truck and adding wd40 to help loosen the rubber hangers and the bolt with the spring at the flange - I noticed a square nut on the threaded side of the bolt.

Question: does this square nut need to be removed or is it welded on to the flange (not removable)?

can’t really find the answer to this.

Thanks!

 

Pic?

 

Sounds like a carriage bolt.

 

Just added the pic. I circled the nut I’m referring too.
Thanks!

 

There usually tack welded i think...if you loosen it you will know

 

It’s welded on and is not removable. The only thing you should have to remove is the bolt

 

Yeah, I’m running into conflicting info on these nuts.. some post as being welded on and other I see where they are removed..

 

Those threads look really good...shouldnt be a problem removing those ...

 

Thanks!!! I really appreciate the feedback!

Thanks all for chiming in and helping me!! Going to get started on this in a few.. much appreciated!

 

Circling back and confirming what has been stated by fellow posters - nuts are indeed welded on to the flange.

thanks again!