Because SAE J1397 covers versatile grades like and G10460 (1046) , it is used across numerous sectors: Automotive: Fasteners, flanges, and small gears.
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Match the measured top speed (e.g., 18 mph = 29 km/h) to a class defined in the standard. Note that classes may be defined in both mph and km/h. Because SAE J1397 covers versatile grades like and