Hex nuts and hex jam nuts are types of fasteners with six flat sides designed to secure bolts, screws, or studs in mechanical assemblies. Hex nuts have a standard height and are tightened onto threaded components, providing stability and preventing loosening. Hex jam nuts are thinner than regular hex nuts, making them suitable for applications with limited space. They are often used in conjunction with standard nuts to prevent unintentional loosening by creating a locking effect. Both nuts are made of various materials, including steel, stainless steel, or brass, and are available in different thread sizes to accommodate diverse industrial needs.