EN ISO 3266:2010 PDF

Overview

EN ISO 3266:2010 - Forged steel eyebolts grade 4 for general lifting purposes (ISO 3266:2010) defines the essential characteristics, performance and critical dimensions for one-piece forged steel eyebolts (grade 4) used in general lifting. It ensures interchangeability and compatibility with other lifting components and covers axial and inclined loading. The standard applies to eyebolts for use in the temperature range −20 °C to 200 °C and is not applicable to eyebolts that are not forged in one piece or items manufactured before publication.

Key topics and technical requirements

• Dimensions & tolerances: Critical eye and shank dimensions are specified to permit direct connection with shackles and, where relevant, with sling hooks. The eye dimensions match working load limits defined in ISO 2415.
• Material, heat treatment & hardness: Requirements for steel quality, heat treatment and hardness to achieve the mechanical properties expected of grade 4 eyebolts.
• Mechanical properties & tests:
  • Proof and breaking force definitions and test requirements (static tensile and manufacturing tests).
  • Type testing and sampling rules for lot acceptance.
  • References to internationally recognized test methods (e.g., Charpy impact, Brinell and Rockwell hardness tests, verification of testing machines).
• Workmanship & non-destructive testing: Surface quality, finishing requirements and guidance on non-destructive inspection methods (magnetic particle / penetrant testing referenced).
• Safety & hazard coverage: Clause listing significant hazards, hazardous situations and events (dimensional incompatibility, inadequate strength/toughness, incorrect selection, inadequate user information).
• Marking & traceability: Mandatory markings (including traceability codes), manufacturer’s declaration and user information to support safe selection and use.
• Regulatory relationship: Annex ZA links the standard to essential requirements of EU Directive 2006/42/EC (machinery), supporting CE conformity where applicable.

Applications and users

Practical uses of EN ISO 3266:2010:

• Specification for manufacturers producing forged steel eyebolts grade 4.
• Design and procurement guidance for lifting equipment designers, rigging suppliers and purchasing engineers.
• Basis for inspection, testing and certification by quality and testing laboratories.
• Reference for safety managers, maintenance teams and end-users to ensure correct selection, handling and safe working load limits (WLL) in lifting operations.

Related standards

• ISO 2415 (shackles working load limits) - eye dimensions compatible with shackles of the same WLL.
• Test standards cited (e.g., ISO Charpy, Brinell/Rockwell hardness, ISO/IEC 17025 for labs).
• EN 10228 series for non-destructive testing of forgings.

Keywords: EN ISO 3266:2010, forged steel eyebolts, grade 4, lifting eyebolts, ISO 3266, working load limit, eyebolt dimensions, lifting safety, shackle compatibility.