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ANSI B92.1 30° flat-root external spline shaft section, 12/24 pitch, 12 teeth

ANSI B92.1 30° flat-root external spline shaft section, 12/24 pitch, 12 teeth: pitch Ø25.400 mm (1 in), major Ø27.517 mm (1.0833 in), minor (root) Ø22.543 mm (0.8875 in); basic tooth (tooth thickness half the circular pitch, no tolerance or effective-variation shift), true involute flank carried down to the root circle (the root fillet is not modelled); the 25.4 mm (1 in) length is an example, no chamfer, no bore

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

pitch P / Ps12/24
teeth N12
pitch Ø D = N / P, in (mm)1 (25.40)
major Ø external Do = (N + 1) / P1.0833 (27.52)
minor Ø external Dre0.8875 (22.54)
minor Ø internal Di = (N − 1) / P0.9167 (23.28)
major Ø internal Dri1.1125 (28.26)
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From the full sheet

Involute splines ANSI B92.1 (30° flat root, side fit): pitch, major and minor diameters by tooth count, 5/10 to 48/96 + example shaft STEP/STL: every size, notes, mating features and sources. What are the pitch, major and minor diameters of an ANSI B92.1 involute spline (for example 16/32 pitch, 24 teeth)?

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