Looking for specs for NA standard (DoD metric) fasteners
In particular, the NA160 castellated nut. We have a former Rumanian air force airplane, and it has metric bolts, screws nuts etc. They are specified as "NAxxx", in particular the wing attach uses NA160 castellated nuts. The problem is that there seems to be no spec for NA160. We can have the fastener made if we have the spec, but so far we don't have that.
AIA's NA specs aren't it. I've looked at NA0160, and the title refers to it as a "star washer", so clearly there is US DoD/NASA specs on one hand and AIA NA specs on the other. I presume there are other sources for the specs (the Organisation Formerly Known as aecma, for example).
Anyway, we are trying to find them, and its getting really, really frustrating. Any advice, help, etc would be greatly appreciated.