Approx 0.609 in. Lg, 3.500 in. Id, 4.188 in. Od, w/marking open, lock, used on flying outfit, high altitude part number a/p22s6a
Classification: Military wearing apparel of all types and materials, including footwear and headwear
NSN 6110-01-250-7168
NSN 5910-00-518-1477
NSN 6650-01-282-8015
NSN 6240-00-505-0301
NSN 5999-01-029-0901
NSN 5855-00-337-3679
NSN 6110-01-422-3783
NSN 6645-01-566-3205
NSN 6320-01-029-4220
NSN 6650-01-428-9958
NSN 2925-00-152-1825
NSN 5905-01-331-9675