Anyone know the thread diameter size for the rear firewall side male tubing nut on the brake line end that goes into the Brake Master Cylinder port for a 94 Accord with ABS . . . ??? I'm getting an 11.5 mm X 1.0 mm pitch, and of course local metric bolt sellers say there is no such size, closest is a 12mm X 1.25. Maybe I am holding the caliper jaws too tight, but it aint a 1.25 pitch. Anyway, anyone know the size the those threads for sure?

Not all brake thread diameters on Hondas are 10 mm. The sticky needs thinner applied to it.

 

It will be either a 12mm x 1.0 or 10mm x 1.0 , more then likely it will be 12mm x 1.0

 

The front one is a 10. The rear one is larger. It must be a 12. Not sure why I got an 11.5 reading, even after several checks. I was using a small pocket slide caliper, nothing fancy, for doing quick checks, but even so, it is usually right on the mark. However, every once in awhile I do see fasteners that give me an odd reading like 11.5

 

So the smaller one with a 10mm head is a 10mmx1.0?