MIL-DTL-5015 is from the 1930s and used in avionics as well as industrial electrics: https://en.wikipedia.org/wiki/MIL-DTL-5015 https://en.wikipedia.org/wiki/MI

MIL-DTL-5015 is from the 1930s and used in avionics as well as industrial electrics: https://en.wikipedia.org/wiki/MIL-DTL-5015 https://en.wikipedia.org/wiki/MIL-DTL-5015 I have soldered a lot of these into cable assemblies for automated welding fixtures. They are also found on some servo motors and cables.