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SAE AS7474

Revision C, October 1, 2011

Complete Document

Bolts and Screws, Steel, Corrosion Resistant, UNS S17400 Tensile Strength 140 ksi Procurement Specification

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Product Details:

  • Revision: Revision C, October 1, 2011
  • Published Date: October 2011
  • Status: Active, Most Current
  • Document Language: English
  • Published By: SAE International (SAE)
  • Page Count: 22
  • ANSI Approved: No
  • DoD Adopted: Yes

Description / Abstract:

Type This specification covers bolts and screws made from a corrosion and heat resistant, martensitic iron base alloy of the type identified under the Unified Numbering System as UNS S17400. The following specification designations and their properties are covered:


140 ksi minimum ultimate tensile strength at room temperature

100 ksi stress corrosion test

72 ksi to 7.2 ksi tension-tension fatigue


140 ksi minimum ultimate tensile strength at room temperature

100 ksi stress corrosion test

88 ksi minimum ultimate shear strength at room temperature


Primarily for aerospace propulsion system applications where corrosion resistance and high strength in tension is required in temperatures not to exceed 600 °F.

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.

AIA/NAS Aerospace Standards