>> Search results for: 2R2990 NSN Search Results National Stock Number (NSN) Description 4820-01-218-2355, 4820012182355 Cancelled -> Replaced by 4820016773016 5340-01-207-1161 , 5340012071161 RETAINER,HELICAL COMPRESSION SPR 4820-01-207-1138, 4820012071138 POPPET ASSEMBLY,VAL 5340-01-207-6087 , 5340012076087 SEAT,HELICAL COMPRESSION SPRING 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