4240-01-089-8929 (201-300)
4240-01-089-8929 is equivalent to manufacture part number 201-300. It is a air and gas mask adapter kit and is classified under Federal Supply Class 4240 (4240 - Safety and Rescue Equipment), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4240 - Safety and Rescue Equipment and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.