Question on 2004R dipstick tube bolt

[12lives]

What size is the bolt that holds the dipstick tube to the trans. Not the one on the bell housing but the small one where the tubes goes into the trans.
Thanks!

 

[pacecarta]

there is no small bolt for dipstick , just the tube slid into the rubber grommet
there is a small bolt for the tv cable and thats an M6 1.0 i think (takes a 10mm wrench)