EN 2934:1996

Overview

EN 2934:1996 (CEN) defines the characteristics of aerospace T-head bolts with a relieved shank and long thread made from the heat‑resisting nickel‑base alloy NI‑P100HT (Inconel 718), with silver plating. The standard classifies these fasteners for high‑strength, high‑temperature aerospace use with a stated classification of 1 275 MPa (at ambient temperature) / 650 °C. EN 2934 sets out the essential material and product identity requirements needed where consistent performance at elevated temperature is required.

Key Topics

• Bolt type and geometry: Specifies the T‑head form factor, relieved (reduced) shank and long thread configuration appropriate for aerospace assemblies.
• Material: Uses the heat‑resisting nickel‑base alloy NI‑P100HT (Inconel 718), selected for high strength and stability at elevated temperatures.
• Surface finish: Requires silver plating to meet electrical, corrosion or assembly requirements specified for aerospace applications.
• Performance classification: Designated as 1 275 MPa / 650 °C, indicating suitability for applications requiring maintained mechanical integrity up to 650 °C.
• Application focus: Intended for aerospace components where temperature resistance, mechanical reliability and a T‑head fastening form are needed.
• Identification and conformity: The standard provides the basis for marking, inspection and specification compliance (see the published EN text for full requirements).

Applications

EN 2934 is relevant to organizations and roles that specify, design, procure, manufacture or inspect high‑temperature aerospace fasteners:

• Aerospace design engineers specifying fasteners for elevated‑temperature assemblies.
• Fastener manufacturers producing NI‑P100HT T‑head bolts to meet aerospace classing and finish requirements.
• Procurement and quality assurance teams verifying conformity of supplied hardware.
• Maintenance and overhaul organizations replacing critical high‑temperature fasteners.
  Common use cases include structural or engine‑adjacent assemblies in aircraft and aerospace systems where long‑thread T‑head bolts with high temperature capability and controlled surface plating are required.

Related Standards (if applicable)

EN 2934 should be used alongside other aerospace fastener and material specifications (material composition, heat‑treatment and testing standards, and product conformity protocols). For complete design and procurement, consult the full EN 2934 document and other applicable EN/ISO aerospace fastener standards.