Help identifying PS box tapered thread size

[Offender90]

Anyone know the thread size for the high pressure hose on a 4 bolt power steering box (pic below)?

http://img25.imageshack.us/img25/3517/17102009200copy.jpg (http://img25.imageshack.us/i/17102009200copy.jpg/)

The internal diameter of the threaded hole is 12.2mm at the bottom, and 12.25mm at the top. I couldn't find it in the workshop manual and all the references I've found on BSPT and NPT standards refer to external diameters :(

The 3 bolt box thread is signifncantly smaller.

Cheers

[discowhite]

it wont be tapered as the pipe seals in the housing using an o ring. im going down to work in a min i'll measure the 4 bolt box i have there.

cheers phil

[discowhite]

M14 x 1.5

cheers phil