Overview - ISO 9758:2000 at a glance
ISO 9758:2000 defines the characteristics, dimensions and load ratings for aerospace fork-ends (threaded) in steel, intended for rolling bearings used with aircraft control wire rope. The International Standard covers configuration, dimensional tolerances, masses and nominal breaking loads, plus material and surface‑treatment options for fork‑end components used in aircraft flight‑control cable systems.
Key topics and technical requirements
- Scope and purpose: Standardizes fork‑end geometry and mechanical loading for compatibility and safety in aircraft control cable assemblies.
- Dimensions and loads: Complete dimensional drawings (Figure 1) and a table of nominal sizes, masses and breaking loads (Table 1) are provided - users should refer to the published figures/tables for exact values.
- Materials: Two material families are specified: Code A - corrosion‑resistant steel, and Code B - low alloy steel (normative correspondence to national specifications is in Annex A).
- Surface treatment: Options include passivation or shot‑peening for stainless materials and cadmium plating for low alloy steel, with referenced specifications (e.g., ISO 8074, EN/SAE and QQ‑P‑416).
- Threads and fit: Thread forms and tolerances reference MJ thread standards (ISO 5855‑2) and include right/left thread identification (codes R/L).
- Accessory features: Specifies grooves for roll/pin retention and provisions for anti‑rotation or left‑hand thread notches where applicable.
- Marking and designation: Defines marking locations and a required identity block for traceability; manufacturers choose the marking method.
- Normative references: Integrated with related aerospace standards (ISO 2020‑1, ISO 9761, ISO 10955, etc.) to ensure system compatibility.
Practical applications and users
Who benefits from ISO 9758:2000:
- Aircraft designers and systems engineers specifying flight‑control cable terminations.
- Aerospace component manufacturers producing fork‑ends for rolling bearings and wire rope assemblies.
- Supply chain and procurement teams ensuring bought components meet standardized dimensions and loads.
- Maintenance, repair and overhaul (MRO) organizations and inspectors verifying part interchangeability and traceability.
- Certification authorities assessing compliance with accepted aerospace hardware standards.
Practical uses:
- Ensuring interchangeability of fork‑ends across suppliers.
- Matching fork‑end geometry to rolling bearings and cable assemblies.
- Specifying material and finish for corrosion resistance and fatigue performance.
- Linking component specifications to installation and inspection procedures.
Related standards
Relevant cross‑references in the standard include: ISO 2020‑1, ISO 5855‑2, ISO 8074, ISO 9761, and ISO 10955 (see Annex A for national material/treatment equivalences).
For exact dimensions, thread details and load values, consult the full ISO 9758:2000 document.