>> Search results for: Y21161A3 NSN Search Results National Stock Number (NSN) Description 4820-99-051-1762, 4820990511762 STEM,FLUID VALVE 5330-99-311-2872 , 5330993112872 GASKET 4820-99-587-8791, 4820995878791 DISK,VALVE 5330-99-409-4309 , 5330994094309 PACKING MATERIAL 4820-99-008-0059, 4820990080059 VALVE,STOP-CHECK 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information