Does anyone know the thread pitch of the Brake Master Cylinder AAS port? I want to cap it off, as its not on this car. I believe its m14 but I couldnt find the right pitch at Ace Hardware. I found one other post asking about it but nobody had a clear answer.

 

Bumping this up, does anyone know? Still stuck. I have been to 4 or 5 aces now, home depot, lowes, and reached out to the manufacturer with no luck.

 

Brake line fittings are typically 1.0 thread pitch. You're not going to find that at a hardware store. If you have the original fitting from the car that went in there then measure it. If you think it's an m14 then order an m14x1 fitting from Amazon and see if it works. If you order a steel fitting then you simply need to put a dab of weld on one side to make the plug you are looking for

 

Centric lists it as an M14x1.0 thread, which is unusual