A clasp, especially a metal strap permanently fast at one end to a staple or pin, while the other passes over a staple, and is fastened by a padlock or a pin; also, a metallic hook for fastening a door
A hasp is a flat piece of metal with a long hole in it, fastened to the edge of a door or lid. To close the door or lid, you push the hasp over a metal loop fastened to the other part and put a lock through the loop. To close or lock with such a fastener. a flat piece of metal used to fasten a door, lid etc