This specification covers bolts and screws made from a corrosion and heat resistant, precipitation hardenable iron base alloy of the type identified under the Unified Numbering System as UNS S66286, and of 130 000 psi tensile strength atroom temperature, with maximum test temperature of parts at 1200 °F.1.2 ApplicationPrimarily for aerospace propulsion system applications where a good combination of strength and resistance to relaxation at elevated temperatures is required.1.3 Safety - Hazardous MaterialsWhile the materials, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the soleresponsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.