Standard [CURRENT]
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This standard specifies mating dimensions and tolerances for the sprocket and splines of the hub of an internally geared hub or a backpedal brake hub on a cycle. The responsible German standardization committee is Working Committee NA 112-06-01 AA "Fahrräder für allgemeine und sportliche Benutzung" ("Cycles for common and athletic use") at DIN Standards Committee Sports Equipment (NASport).