SAE TS24-8-2023 PDF

Full title and description

SAE International Specification TS24-8 — "TS24 Manufacturing Specification for Bolts 1275 MPa (185,000 lbf/in²) Tensile at Room Temperature; 1000 MPa (145,000 lbf/in²) Tensile at 650°C". This specification defines material, manufacturing and acceptance requirements for high‑strength forged bolts used in aerospace engine and airframe applications.

Abstract

TS24-8 sets minimum tensile strength requirements, material references, and geometry/forging requirements for forged bolts manufactured to specified aerospace materials (examples include DTD5638, EN 2952, EN 3219 and AMS5662). The document is intended to ensure bolts achieve a minimum tensile strength of 1275 MPa at room temperature and 1000 MPa at 650°C, with associated manufacturing, inspection and documentation controls for aerospace use.

General information

• Status: Revised.
• Publication date: Revised October 18, 2023 (originally issued November 2007).
• Publisher: SAE Industry Technologies Consortia / SAE International.
• ICS / categories: Aerospace engineering; fasteners; mechanical properties / materials (aerospace fasteners and tensile strength).
• Edition / version: TS24-8 (revised edition dated October 18, 2023).
• Number of pages: 26.

Scope

This specification covers forged bolts made from or equivalent to materials called out as DTD5638, EN 2952, EN 3219 or AMS5662, with rolled underhead radii and other specified geometric and manufacturing features. It requires the bolts to achieve the stated minimum tensile strengths at room temperature and at elevated temperature (650°C), and includes manufacturing, heat treatment, testing and acceptance criteria appropriate for aerospace engine and airframe applications.

Key topics and requirements

• Minimum tensile strength: 1275 MPa (185,000 lbf/in²) at room temperature; 1000 MPa (145,000 lbf/in²) at 650°C.
• Acceptable base materials and material references: DTD5638, EN 2952, EN 3219, AMS5662 (or equivalents).
• Forging and geometry requirements, including rolled underhead radii.
• Heat treatment and processing controls to achieve mechanical properties.
• Inspection and verification: tensile testing and documentation of conformance to the specification.
• Traceability, marking and supplier quality requirements appropriate for engine and airframe use.

Items above are summarized from the specification requirements and scope.

Typical use and users

Primary users are aerospace fastener manufacturers, engine and airframe OEMs, procurement and quality engineers, materials and mechanical engineers responsible for specifying and qualifying high‑temperature, high‑strength bolts in turbine engines and critical airframe installations. The standard is used to specify purchase requirements, production acceptance criteria and supplier audits for high‑strength forged bolts.

Related standards

Standards and documents commonly referenced alongside TS24-8 include AMS5662, DTD5638, EN 2952 and EN 3219 (material and fastener specifications), as well as other parts of the TS24 series (see TS24-9 and earlier TS24 editions) and relevant SAE/industry fastener and testing standards.

Keywords

aerospace; fasteners; bolts; forged bolts; tensile strength; high‑temperature strength; AMS5662; DTD5638; EN 2952; EN 3219; TS24; SAE.

FAQ

Q: What is this standard?

A: TS24-8 is an SAE International manufacturing specification that defines material, manufacturing, mechanical property and acceptance requirements for high‑strength forged bolts used in aerospace engine and airframe applications.

Q: What does it cover?

A: It covers forged bolt materials and manufacturing requirements (including rolled underhead radii), required minimum tensile strengths at room temperature and at 650°C, and associated inspection, testing and documentation controls.

Q: Who typically uses it?

A: Aerospace fastener manufacturers, engine and airframe OEMs, procurement and quality assurance teams, and materials/mechanical engineers specifying high‑temperature high‑strength bolts.

Q: Is it current or superseded?

A: TS24-8 is listed as "Revised" with a revision dated October 18, 2023. The TS24 series has subsequent revisions in the TS24 family (for example TS24-9 noted in revisions). Users should confirm the latest TS24 series status before placing purchases or making design decisions.

Q: Is it part of a series?

A: Yes — TS24-8 is part of the TS24 manufacturing specification series for bolts and related fasteners; other numbered parts in the TS24 series cover different materials, sizes or application‑specific requirements.

Q: What are the key keywords?

A: High‑strength bolts; tensile strength 1275 MPa; elevated temperature strength 1000 MPa at 650°C; forged bolts; aerospace fasteners; AMS5662; DTD5638.