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【范围】
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1.1 Type
This procurement specification covers bolts and screws made from a low alloy, heat resistant steel of the type identified
under the Unified Numbering System as UNS K14675, having UNJ profile threads. The following specification
designations and their properties are covered
AS7459 195 ksi minimum ultimate tensile strength at room temperature
145 ksi minimum ultimate tensile strength at 900 °F
105 ksi stress rupture strength at 900 °F for 100 hours
100 ksi tension to 10 ksi tension fatigue at room temperature
Protective treatment to be specified on part drawing
AS7459-1 AS7459 part plated per AMS2416, nickel-cadmium diffused plating
AS7459-2 195 ksi minimum ultimate tensile strength at room temperature
117 ksi minimum ultimate shear strength at room temperature
Protective treatment to be specified on part drawing
AS7459-3 AS7459-2 part plated per AMS2416, nickel-cadmium diffused plating
1.2 Application
Primarily for aerospace propulsion system applications where high strength at temperatures up to approximately 900 °F is
required and the part is protected against corrosion.
1.3 Safety - Hazardous Materials
While the materials, methods, 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
sole responsibility 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.strRefField
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