Type This procurement specification covers bolts and screws made from a corrosion and heat resistant@ age hardenable nickel base alloy of the type identified under the Unified Numbering System as UNS N07718. Classification a. Tensile strength at room temperature 185 ksi minimum b. Maximum test temperature of parts 1@200 ??c. Tensile strength at 1@200 ??145 ksi minimum d. Stress Rupture: 100 ksi stress rupture strength at 1@200 ??Application Primarily for use in aerospace propulsion systems as follows: a. For use up to approximately 1@200 ??where elevated temperature tensile strength@ stress-rupture strength@ and resistance to relaxation are required. b. For use up to approximately 800 ??where fatigue resistance and tensile strength are required.