>> Search results for: H641B NSN Search Results National Stock Number (NSN) Description 3940-01-279-6623, 3940012796623 BLOCK,TACKLE 3940-01-279-6624 , 3940012796624 BLOCK,TACKLE 3940-21-864-9774, 3940218649774 BLOCK,TACKLE 3940-21-867-0092 , 3940218670092 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