What are the specs on the nuts that fit on the studs connected to the main cat to attach to the muffler?
I've lost mine and need a replacement bu tonight.
Could I get one at a local autoparts or hardware store?
14mm but I don't know what the thread is and it's kinda hard to bring the million ton cat into the store hehe.
Seems to be Mazda# JE11-40-255A
Thanx!!
-Jedon

 

damn, we just did this 2 nights ago, and I cant remember if its 14 or 17 mm. Its definately one of the two, I know that the nuts from precat to cat were 17s...man, I hate those ****** things.

 

Oh yeah, you are right, they are 17's. The part I don't know is the thread pitch.

 

I think its just a standard nut, 17mm. Then again that could be why mine al all seized up...

 

FYI, in the metric system, nuts and bolts are identified by the diameter of the THREADED part (and its pitch) and not by the tool size.

Bernd

 

bkblues: thanx yeah, but I don't know the diameter or pitch of the threaded part and it's a stud connected (firmly!!) to the cat.
I keep telling people not to judge me by my tool size

 

Well they are 12mm and either 1.5 or 1.75 threads, I'll let everyone know incase someone else ever searches for these things.
-Jedon

 

It's probably a 12mmx1.5 pitch, pretty common on our cars.. heck, common on most Japanese cars.

Matt
93 SSM

 

Just confirmed this measurement. M12x1.5mm pitch.
I don't know why Mazdatrix claims it's a 1.25mm pitch on their website. I measured this on 3 of my cat studs.

Dave