heathy12 wrote:Cheers guys.
Be a shame to pop a pipe in the system now ive got a nice shiney stainless pipe!
I know you can get them, the helpfull hotrodder guy down at my local Moss has used them for this exact same scenario!
Its 3/8 unf to 7/16 unc adaptor which I require. Gotta couple of numbers i'll have to give a call next week.
No Minoring over the new year for me then

You thought it was all going too well, didn't you.....
Two thoughts: As Roy says, the TR7 is likely to be M10 rather than 7/16 UNC. Try a M10 screw in the female end. If it waggles like a twit in a top hat, then you are right and we are wrong, 7/16 equating to 11.1mm is a bit of an unusual size for unions, but the pitch is similar enough that it will erroneously thread onto M10. Or compare the I/D with an M10 nut using a vernier.
Look for your local hydraulic pipe shop in the Thompson directory- I did this recently in my quest to re-terminate the hydrolastic pipes on my boys' 1100, and found the local hydraulic shop to be very knowledgeable and sympathetic. They are used to dealing with farmers brandishing antique bits of oily metal, so should smile on a Moggy owner, especially if you are wearing slightly grubby overalls!