MIL-SPEC is applied to an item that meets or exceeds the Milatary specifications that is effect for that product being made.
The Company I worked for built products for the military. Power supplies for Amram, HV power suppies for several Headsup displays on Milatary Jets and Subs, as well as power converters and magnetics for most every Air plane manufacturer in the Free World.
Retired Electronics Manufactureing Engineer of 35 years at OECO LLC, Milwaukie, Oregon
Clyde Lambert KC7BJE