>> Search results for: 20291A NSN Search Results National Stock Number (NSN) Description 4420-01-278-5537, 4420012785537 HOUSING,CASE 4420-01-278-5538 , 4420012785538 HOUSING,COVER 4420-01-278-5626, 4420012785626 COOLER,FLUID,INDUSTRIAL 4820-01-377-6861 , 4820013776861 VALVE,SAFETY RELIEF 5340-17-042-2068, 5340170422068 TRILLINGSISOLATOR, 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