>> Search results for: F3990 NSN Search Results National Stock Number (NSN) Description 5360-00-415-8429, 5360004158429 SPRING,HELICAL,COMPRESSION 5310-01-499-5322 , 5310014995322 WASHER,LOCK 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