Diameter variation

Thread quality and performance
A local deviation in thread diameter from the expected average.
Also known as
Thread diameter deviation
Not to be confused with Linear density and apparent diameter are related but not identical.
Translations
DE Durchmesserschwankung
FR Variation de diamètre
ES Variación del diámetro
IT Variazione del diametro
CN 直径变化
VN Biến thiên đường kính