Description

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 degrees F;
105 ksi stress rupture strength at 900 degrees F for 100 hours;
100 ksi tension to 10 ksi tension fatigue at room temperature;
Protective treatment to be specificed on part drawing;

AS7459-1
AS7459 part plated per AMS 2416, nickel-cadmium diffused plating;

AS7495-2
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;

AS7495-3
AS7495-2 part plated per AMS 2416, nickel-cadmium diffused plating.