"Inputs (unitless):" dia = 25 pitch = 1 "Calculations:" # Tolerance of major diameter of external thread. Para. 6.5.2: Td = 0.18 * pitch^(2 / 3) - 0.00315 / pitch^0.5 # Tolerance of pitch diameter. Para. 6.6.1: Td_2 = 0.09 * pitch^0.4 * dia^0.1 # Fundamental deviation of external thread where negative means clearance. Para. 6.3: es_g = -(0.015 + 0.011 * pitch) # Fundamental deviation of internal thread where positive means clearance. Para. 6.3: EI_g = 0.015 + 0.011 * pitch # Maximum major diameter. Para. 9.3.2: d_max = dia - abs(es_g) # Minimum major diameter. Para. 9.3.2: d_min = d_max - Td # Maximum pitch diameter. Para. 9.3.2: d2_max = dia - 0.6495191 * pitch - es_g # Minimum pitch diameter. Para 9.3.2: d2_min = d2_max - Td_2