>> Search results for: 6239421 NSN Search Results National Stock Number (NSN) Description 6660-01-250-4242, 6660012504242 HOUSING-SHAFT ASSEM 4820-01-640-6689 , 4820016406689 VALVE,RELIEF,PRESSURE AND TEMPER 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