These quick release fasteners provide positive locking in quick change applications where there is frequent insertion and removal of a fastener. They are designed to be used with the ball-locking receptacles referenced on the table. The pin can be threaded into the fixture and the receptacle is mounted to the base. As the pin is inserted into the receptacle, the balls on the pin expand and lock the fixture in place. The pin will not release until the button on the handle is depressed, allowing the balls to retract into the shank so that the pin can be inserted or removed from the receptacle without the use of tools. The end of the pin is tapered to make alignment of the pin easy. They can be used with locating pins to provide highly accurate positioning. The body is made from SAE1045 carbon steel with an electroless nickel plating finish. The button is made from 1045 steel. Balls are made from hardened SUS440C stainless steel.