CR = do
KR = 0,1Do
SF = 3,5t or per request
DH = 0,1935Do – 0,455t
THi = SF + DH
D0 = external head diameter
Di = internal head diameter
CR = crown radius
KR = knuckle radius
SF = straight flange height
DH = depth of dishing
THi = total internal head height
t = wall thickness