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The document ANSI B92.2 , often referred to in conjunction with , is a technical standard titled Metric Involute Splines and Inspection ANSI standards are copyrighted materials
This is the heart of the standard. The PDF provides the formulas for calculating the minimum and maximum effective tooth thickness (for the shaft) and space width (for the hub). These values are critical for avoiding backlash or binding. often referred to in conjunction with