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This Document Has Been Superseded
A newer publication replaces it: BSI BS 436-4
Spur and helical gears -- Basic rack form, pitches and accuracy (diametral pitch series)
Spur and helical gears.
Basic rack form, pitches and accuracies.
External and internal involute spur and helical gears for use with parallel shafts, and having normal diametral pitches equal to or coarser than 20.
Basic rack and tooth form; terminology and notation; first and second preference standard pitches; fundamental tolerances.
Essential data to be specified on component drawings.
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