>> Search results for: YK45109 NSN Search Results National Stock Number (NSN) Description 4820-01-342-1603, 4820013421603 VALVE,CHECK 6115-99-777-9390 , 6115997779390 CONDENSATE DRAIN AS 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