The term 'PART OF A LOCKER' can be summarized by the four-letter word 'HASP'. A HASP is a type of fastener used to secure a door, lid, or other object. It consists of a metal loop that is secured to one side of the object and a hinged metal arm that is secured to the other side. The arm is then closed over the loop and secured with a padlock or other locking mechanism. Hasps are commonly used on lockers, sheds, and other objects that need to be secured.