Philidas nuts lock on a bolt in any position, designed to create the most convenient and practical fastening method for any industry or domestic application. Even in high-performance environments where vibration may occur, our locking nuts are developed to stay in place. They also help reduce assembly time, use fewer components and are more cost-effective than alternative methods. all metal locking nut products, Philidas produces a wide range of fasteners in a variety of materials. Special Purpose Fasteners can be made to customer specification.