The Ansi B92.1a-1976 standard provides detailed specifications for involute splines, including:
Under load, the involute profile forces the mating parts into a perfectly centered position. Ansi B92.1a-1976
Involute teeth can be precisely spaced and measured, ensuring consistent performance. Inspection and Tolerance The Ansi B92
Manufacturers would then cut the spline using hobs, broaches, or shapers, then inspect using calibrated wires and a micrometer to verify tooth thickness to within ten-thousandths of an inch. including: Under load