Is there a grade or class of metric fastener that comes with batch numbers and/or inspection reports and/or some other form of traceablilty, suitable for mounting in an aircraft? Another option would be UNC screws of some size. Most aircraft screws are UNF or UNJF.
My actual problem is that I am trying to find anti-vibration mounts that will be delivered in six weeks or less. Someone is searching a warehouse, and I am probably going to have to use whatever screw thread is available.