This procurement specification covers aircraft quality bolts and screws made from a low alloy, heat resistant steel of the type identified under the Unified Numbering System as UNS K14675. AS7454 ~ 135 000 psi ultimate tensile strength at room temperture. AS7454-1 ~ 135 000 psi ultimate tensile strength at room temperture, nickel-cadmium plated.Primarily for aerospace propulsion system applications where good strength at temperatures up to approximately 900 mDF is required and the part is protected against corrosion.