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ANSI/ITSDF B56.11.4-2018
Hook-Type Forks and Fork Carriers for Powered Industrial Forklift Trucks
Establishment of the safety requirements relating to the elements of design, operation, and maintenance; standardization relating to principal dimensions to facilitate interchangeability, test methods, and test procedures of powered and nonpowered industrial trucks (not including vehicles intended primarily for earth moving or over-the-road hauling); and maintenance of liaison with the International Organization for Standardization (ISO) in all matters pertaining to powered and nonpowered industrial trucks.
American National Standards Institute [ansi]