EN 2792:1991

Overview - EN 2792:1991 (Aerospace series)

EN 2792:1991 is a CEN aerospace standard that defines the dimensions and load characteristics for adjustable rod ends with a double fork and a threaded shank having an engagement depth of 1.5 × thread diameter. The standard covers identification and locking features-specifically a circumferential groove to identify engagement and an optional longitudinal groove for locking-and limits the use of cadmium plating to environments up to 235 °C. These rod ends are intended primarily for flight control rods and other aircraft structural linkages.

Key topics and technical requirements

• Geometry and dimensions: standardized form and size parameters for double-fork rod ends to ensure interchangeability and correct fit with mating components.
• Threaded shank engagement: specification of engagement length equal to 1.5 × thread diameter, used to define correct screw-in depth and mechanical retention.
• Identification groove: circumferential groove requirement to mark engagement condition for inspection and assembly.
• Locking provision: optional longitudinal groove for mechanical locking methods (wire, cotter, or other locking devices where applicable).
• Surface treatment limits: use of cadmium plating allowed but restricted to service temperatures ≤ 235 °C, important for corrosion protection and high-temperature performance.
• Loads and performance: the standard provides load-related guidance and design limits for safe use in aerospace control and structural systems (see full text for numeric values and test criteria).
• Intended applications: explicit focus on aircraft flight control rods and structural rod connections.

Applications and who uses EN 2792:1991

• Aerospace design engineers specifying rod-end hardware for flight control linkages and structural actuation systems.
• Manufacturers producing adjustable rod ends and mating components to ensure dimensional conformance and interchangeability.
• Procurement and quality assurance teams verifying parts against an accepted standard for aircraft components.
• Maintenance, repair and overhaul (MRO) organizations selecting replacement rod ends that meet original equipment requirements.
• Certification and regulatory bodies referencing standard dimensions and material/finish limits during conformity assessments.

Related standards

• Published by CEN as part of aerospace series; users should consult other EN/ISO aerospace fastener and surface-treatment standards for complementary requirements (e.g., fastener thread standards, material specifications, corrosion protection).
• The full standard document (EN 2792:1991) should be obtained from CEN or national standards bodies for exact dimensional tables, load values, test procedures, and implementation details.

Keywords: EN 2792:1991, adjustable rod ends, double fork, threaded shank, 1.5 × thread diameter, cadmium plating, flight control rods, aircraft structures, dimensions and loads.