>> Search results for: 6F19421 NSN Search Results National Stock Number (NSN) Description 4820-00-812-5464, 4820008125464 Cancelled -> Replaced by 4730008100406 4820-00-040-9919 , 4820000409919 VALVE,RESTRICTOR 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