The inserts require no additional coatings or platings, making them ideal for use in a vacuum as there is no out gassing, and they are not limited by the lower temperature capabilities of some platings and coatings, e.g. The surface friction between the mating screw and the Nitronic 60 insert is superior to 304 Stainless Steel inserts due to the additions of silicon and manganese to the alloy which reduces wear and galling, thus particulate matter is eliminated completely or minimized. Inserts made from Nitronic 60 are specifically engineered to eliminate galling and fretting when used with stainless steel screws. A boss radius equal to the nominal bolt diameter is usually sufficient. Stress and fatigue concentrations are reduced to maximize thread strength, thus, increasing the reliability and life of the fastening system.ĬoilThread inserts are designed to be installed in reduced-sized bosses or flanges, thus saving space and weight while providing high strength. As a result, loads are distributed more evenly. The resilient design characteristics of Coilthread inserts allow each coil to adjust independently for maximum surface contact with the parent material. For the same nominal thread size, the parent material thickness requirement is less when compared with thin wall or solid inserts. Thus, they do not need a thick wall structure to support the internal and external threads. 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. KATO CoilThread inserts are based on a continuous helically-coiled open pitch design using a diamond shaped wire.
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