ISO 965-3

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"ISO 965-3:1998 - ISO general purpose screw threads — Tolerances — Part 3: System of tolerances for constructional threads."

ISO 965-3:1998 establishes a system of tolerances for constructional threads, ensuring that threaded fasteners like bolts, nuts, and screws meet the required dimensional accuracy and performance standards. This standard plays a crucial role in ensuring the interchangeability, compatibility, and reliability of fasteners in various industries, including automotive, construction, aerospace, and machinery manufacturing. By defining the acceptable tolerance zones for threaded components, ISO 965-3 contributes to the overall safety and durability of mechanical assemblies.