Table 38

ARow
BTypical Pitch
Diameter
(inches)
CModule
Pitch
DPitch
(mm)
EPitch
(inch)
FDiametrical
Pitch
Equiv.
GAddendum
(mm)
HWhole
Depth
(mm)
GWorm Thread Profile
(20° Pressure Angle)
80.06.0018.85.7424.236.0013.50Worm Thread Profile  - 3.000
70.05.0015.71.6185.085.0011.25Worm Thread Profile  - 2.500
62.04.0012.57.4956.354.009.00Worm Thread Profile  - 2.000
53.03.5011.00.4337.263.507.88Worm Thread Profile  - 1.750
44.03.009.42.3718.473.006.75Worm Thread Profile  - 1.500
37.02.507.85.30910.162.505.63Worm Thread Profile  - 1.375
34.02.257.07.27811.292.255.06Worm Thread Profile  - 1.250
31.02.006.28.24712.702.004.50Worm Thread Profile  - 1.125
28.01.755.50.21614.511.753.94Worm Thread Profile  - 1.000
25.01.504.71.18616.931.503.38Worm Thread Profile  - 0.813
20.01.253.93.15520.321.252.81Worm Thread Profile  - 0.625
16.01.003.14.12425.401.002.25Worm Thread Profile  - 0.583
14.00.902.83.11128.220.902.03Worm Thread Profile  - 0.542
12.00.802.51.09931.750.801.80Worm Thread Profile  - 0.500
11.00.702.20.08736.290.701.58Worm Thread Profile  - 0.469
10.00.601.88.07442.330.601.35Worm Thread Profile  - 0.438
9.00.501.57.06250.800.501.13Worm Thread Profile  - 0.407
8.50.401.26.04963.500.400.90Worm Thread Profile  - 0.375