Need 7.3L IDI injection line to injector thread sizer

[mikadobrain]

Hello,

i got a stuck injector and want to remove it using a diy slidehammer, attached to the injector at the thread where the injection line would sit.

Problem: i want to order a fitting, but don't know what thread it is and have currently no chance of measuring it. Can anyone tell me the thread size?

1990 International 7.3 L IDI without turbo.

Thanks,
Michael