DIN fitting thread question

This fitting came from a bestfittings mde jubilee valve. I know the male threads on the top piece are din. Anyone know what the female threads are on that same piece? I'm trying to get those threads on a quick disconnect
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That’s an excellent question. An internal thread is difficult to measure to ascertain its actual outside diameter. Best bet is to go to Menard’s, Lowe’s, Home Depot or a god hardware store and try various sizes of bolts and nuts in your male and female threads. Or if you have a friend that works in a machine shop they may be able to help.