I'm no expert on this, but air hose fittings come in two varieties, as I understand it.
One is an automotive type, as used in that service industry, ......
and the other in an industrial type, used in factories in industrial applications.
They look somewhat alike, to a casual observer, but of course won't interchange.
So, take your fitting with you if you have to change and/or match it up.
Joe. :teeth :thup