In accordance w/mil-r-83178
A regulator designed to deliver pure breathing oxygen automatically when the user inhales, within a maximum operating altitude of 35,000 feet (10,668 m).
Classification: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)
NSN 5895-00-192-3854
NSN 2925-00-441-8252
NSN 6105-01-608-3974
NSN 6240-01-200-6864
NSN 5930-01-655-2136
NSN 6220-01-127-0506
NSN 6685-00-358-8331
NSN 4140-01-189-6972
NSN 5925-01-202-0980
NSN 5835-01-089-7615
NSN 5975-01-443-2398
NSN 6110-01-534-6435