Fasteners are one of the most useful components for any assembly, often being used to secure two or more parts together in a temporary or permanent fashion. The nut is a subtype of fastener, that of which pairs with a correlating screw or bolt to compress items together with ease. Nuts come in many variations depending on the task at hand, ranging from simple, hand-tightened hardware pieces to large and complex components that necessitate special tools for installation. When an assembly is faced with stressors such as vibration, there may be a concern for loosening fasteners. In such instances, special types of nuts should be used, those of which include lock nuts, jam nuts, and bearing lock nuts.