DIN Standards Committee Mechanical Engineering
ISO 4397
Fluid power connectors and associated components - Nominal outside diameters of tubes and nominal hose sizes
Fluidtechnik - Leitungsanschlüsse und zugehörige Bauteile - Nenn-Außendurchmesser von Rohren und Nenndurchmesser von Schläuchen
Responsible national committee
NA 060-36-40 AA - Tube and hose assemblies and connecting components
Responsible international committee
ISO/TC 131/SC 4/WG 6 - Methods for connecting hose fittings and tubes to connectors