The trouble with auto parts is that none of the brake hose banjo fittings are as large as these. These are SAE-8 (3/4"x16tpi). I've checked with NAPA and spent an hour or so personally going through all of their vendor catalogs and found nothing even close. Nearly everything in brake lines is 10mm, but this is a 19mm size by comparison.
If the Indian source doesn't pan out, I'll just have to make them on the lathe.
As for reusing the existing fittings, I have thought about that too. If I was going to use the existing banjos, I would just cut off the lines and make a drilled tubular coupling and braze it on as a splice to new tubing. This gets me the connections to the tractor but doesn't help with the new connections to the control valve, which I very much want to use banjos for also. Beyond that I am not crazy about spliced lines.
Remember that the existing tubing lines are not a standard diameter, making flareless tubing not an option (the bite sleeve won't bite), and making any flaring tool I know of useless (no way to clamp the tube). Don't ask me where they get this, but the existing tubing measures 0.485" with my caliper, which doesn't seem to be an even metric size either. Maybe it is just oversize 12mm, but I still don't have a 12mm tubing flare tool. Anyway, drilling a splice coupling and brazing it would not be a problem.
Better still, I could always un-braze the existing banjos from their tubes. The OD of their braze sleeve is 0.610 inches which should leave plenty of wall thickness to braze onto 1/2 inch tubing. But I still want to get at least three more banjos for the control valve, and I kind of hated to take apart the original lines, but maybe I should reconsider that if I am going to have to make them on the lathe. I might be able to find some old JD hydraulic lines with these banjos on them, but haven't had any luck with that so far. /forums/images/graemlins/smirk.gif