ISO 9761:2000

Overview

ISO 9761:2000 is an international aerospace standard specifying the dimensions and characteristics of locking clips made from corrosion-resistant steel. These locking clips are designed specifically for aircraft control wire rope turnbuckles, critical components in aerospace mechanical systems. Developed by ISO Technical Committee ISO/TC 20, Subcommittee SC 12, this standard ensures consistency, safety, and reliability in the manufacturing of these essential hardware parts.

By standardizing the materials, dimensions, and surface treatments of locking clips, ISO 9761:2000 supports the durability and corrosion resistance required in the aerospace industry's demanding environments. This standard is crucial for manufacturers, suppliers, and aerospace engineers engaged in the production and maintenance of control wire rope assemblies.

Key Topics

• Scope and Application
  ISO 9761:2000 applies to locking clips used in aircraft control wire rope turnbuckles that require corrosion-resistant steel, ensuring they meet critical aerospace safety requirements.

• Material Specifications
  Locking clips must be made from corrosion-resistant steel suitable for springs, in accordance with ISO 6931-1:1994. This ensures optimal mechanical performance and longevity under harsh environmental conditions.

• Dimensions and Configuration
  The standard defines precise dimensional requirements, detailed in accompanying figures and tables, guaranteeing interchangeability and proper fit. Typical dimensions include lengths and masses with strict tolerance limits.

• Surface Treatment
  To enhance corrosion resistance, locking clips require passivation treatment conforming to ISO 8074:1985. This surface treatment improves the lifespan and reliability of components exposed to varying atmospheric conditions.

• Marking and Packaging
  To facilitate traceability and quality control, each package must include the manufacturer's name, identity code of the locking clips, and quantity information consistent with ISO 9761's designation requirements.

Applications

• Aircraft Control Systems
  Locking clips compliant with ISO 9761 are used in control wire rope turnbuckles, which are vital for adjusting tension and securing cables in flight control mechanisms.

• Maintenance and Repairs
  Aerospace maintenance crews rely on standardized locking clips to replace worn or damaged components, ensuring continued airworthiness and flight safety.

• Aerospace Manufacturing
  Suppliers and parts manufacturers adhere to ISO 9761 to produce locking clips meeting international aerospace quality standards, facilitating global compatibility and certification.

• Corrosion-resistant Components
  In environments subject to moisture and corrosive agents, such as coastal airports or high-altitude flights, these locking clips maintain mechanical integrity and prevent component failure.

Related Standards

• ISO 6931-1:1994 – Stainless steels for springs: Defines the corrosion-resistant steel wire material used for manufacturing locking clips, ensuring compliance with mechanical properties.

• ISO 8074:1985 – Surface treatment of austenitic stainless steel parts: Specifies passivation processes that improve corrosion resistance of aerospace hardware.

• ISO 13715:2000 – Technical drawings: Vocabulary and indication of edges of undefined shape, relevant for defining dimensions and shapes in technical documentation for aerospace parts.

• ISO/IEC Directives, Part 3 – Guidance on the drafting and approval process of international standards that ensures consistency and global acceptance.

By adhering to ISO 9761:2000, aerospace manufacturers and maintenance providers can guarantee high-quality locking clips designed for durability, safety, and optimal performance in aircraft control wire rope turnbuckles. This standard is an essential reference for professionals involved in aerospace hardware specification and quality assurance.