>> Search results for: 20391A NSN Search Results National Stock Number (NSN) Description 5307-01-235-3228, 5307012353228 STUD,PLAIN 4420-01-259-5883 , 4420012595883 COOLER,FLUID,INDUSTRIAL 4820-01-442-2081, 4820014422081 VALVE,SAFETY RELIEF 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