Abstract: An air treatment cartridge, especially an air dryer cartridge, for an air treatment device for a vehicle, especially a utility vehicle, includes: a cartridge body having a connecting portion for connecting the air treatment cartridge to the air treatment device, the connecting portion being formed on the cartridge body and having a leading end, a trailing end opposite to the leading end, and a multi-start screw thread formed between the leading end and the trailing end. Each start of thread of the multi-start screw thread is offset to one another on the leading end and/or the trailing end.

Abstract: A thread is provided for a screw connection between a first module and a second module. A first connecting element of the first module has a first screw thread profile and a second connecting element of the second module has a second screw thread profile. The first screw thread profile is configured such that the first connecting element is suited to be screw-connected to the second connecting element. The first screw thread profile has a reduced cross-sectional thread area in relation to a standardized screw thread.

Abstract: A thread is provided for a screw connection between a first module and a second module. A first connecting element of the first module has a first screw thread profile and a second connecting element of the second module has a second screw thread profile. The first screw thread profile is configured such that the first connecting element is suited to be screw-connected to the second connecting element. The first screw thread profile has a reduced cross-sectional thread area in relation to a standardized screw thread.

Abstract: A fixing interface for fixing an air dryer cartridge and an air treatment device for a vehicle, especially a utility vehicle, includes a cartridge base assignable to the air dryer cartridge. The cartridge base has a fixing flange and a circular ring-shaped metal sheet in contact with the fixing flange in the mounted state. A housing portion assignable to a housing of the air treatment device fixes, in a mounted state, the fixing flange to the housing portion. The fixing flange has a first flange fixing element and the housing portion has a first housing fixing element. The first flange fixing element and the first housing fixing element, in the mounted state, are engaged with one another.