Cage nuts combine the classic elastic properties of fasteners used for assembly with the strength of multi-threaded steel nuts. Cage nuts are designed to be used in any kind of assembly including blind  assemblies and are particularly common in equipment racks. They can be fastened within their housing using bolts and subjected to considerable tightening torque or axial forces. No special tools or specialized fitters are required to mount these nuts. The use of cage nuts allows for a great reduction in assembly time, as costly operations such as tapping, welding or riveting can be avoided. Due to the fact that the nuts are slightly loose within the cage, minor adjustments in the alignment of the parts to be assembled are possible. The cage of this model of nut fits into the assembly position within a square or rectangular hole and due to the elasticity and design of its wings it can be used with a wide range of panel thicknesses. Once mounted in the rectangular hole the cage stays in place while the captive nut can move within the cage to permit assembly.