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16 DP spur gear, 40 teeth, 20° pressure angle

16 DP spur gear, 40 teeth, 20° pressure angle: pitch Ø63.500 mm (2.5 in), outside Ø66.675 mm (2.625 in), root Ø59.531 mm; face 12.70 mm (1/2 in) and bore Ø19.050 mm (3/4 in) are examples, the tooth form is the standard's; true involute flanks, no hub, keyway, chamfer or root fillet

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

teeth N40
pitch Ø = N / DP, in (mm)2.5 (63.50)
outside Ø = (N + 2) / DP, in (mm)2.625 (66.67)
root Ø 14.5°, in (mm)2.3554 (59.83)
root Ø 20°, in (mm)2.3438 (59.53)
base Ø 14.5°, in (mm)2.4204 (61.48)
base Ø 20°, in (mm)2.3492 (59.67)
example face, in1/2
example bore, in3/4
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From the full sheet

Spur gears, 16 diametral pitch (DP): 12 to 60 teeth, 14.5° and 20° involute, pitch / outside / root diameter and STEP/STL: every size, notes, mating features and sources. What is the pitch diameter, outside diameter and root diameter of a 16 DP spur gear, and how many teeth does it have?

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