5340-01-446-5091 (4701-01-15063-1604-1PSA)
5340-01-446-5091 is equivalent to manufacture part number 400021. It is a bumper and is classified under Federal Supply Class 5340 (5340 - Commercial Hardware), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5340 - Commercial Hardware and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.