>> Search results for: 3987H NSN Search Results National Stock Number (NSN) Description 4930-01-049-3405, 4930010493405 HOLDER,DISK 4820-01-535-5764 , 4820015355764 RETAINER,DISK,VALVE 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