KATO CoilThread inserts are based on a continuous helically-coiled open pitch design using a diamond shaped wire. The diamond-shaped wire design allows the inserts to engage the threads in the parent material and at the same time accept a male fastener. Thus, they do not need a thick wall structure to support the internal and external threads. For the same nominal thread size, the parent material thickness requirement is less when compared with thin wall or solid inserts.
The resilient design characteristics of Coilthread inserts allow each coil to adjust independently for maximum surface contact with the parent material. As a result, loads are distributed more evenly. Stress and fatigue concentrations are reduced to maximize thread strength, thus, increasing the reliability and life of the fastening system.
CoilThread inserts are designed to be installed in reduced-sized bosses or flanges, thus saving space and weight while providing high strength. A boss radius equal to the nominal bolt diameter is usually sufficient.Precision engineering, exacting manufacturing standards, and stringent quality control procedures are utilized during entire manufacturing process to assure a high quality product that meets or exceeds all applicable military and aerospace requirements. KATO CoilThread inserts have been put through rigorous torque, tension, and vibration tests as well as comprehensive dimensional inspections and metallurgical analysis in attaining their MIL-SPEC qualifications. CoilThread inserts have been thoroughly tested by an independent testing laboratory and are certified to conform to NASM8846.
United States
