>> Search results for: GGGB00490 NSN Search Results National Stock Number (NSN) Description 3940-00-227-5570, 3940002275570 BLOCK,TACKLE 3940-00-227-5581 , 3940002275581 BLOCK,TACKLE 3940-00-984-0231, 3940009840231 BLOCK,TACKLE 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