Metric Thread Reducer Tube Adapter

2C-W  METRIC MALE 24°CONE /METRIC FEMALE 24°CONE
inner brand 24°cone connectors/adapters meet and exceed ISO 8434-1 requirements and performance. The pressure ratings are higher than ISO 8434-1.
24° cone connectors using a cutting ring and O-ring seal cone (referred to as DKO) suitable for use with ferrous and non-ferrous tubes with outside diameters from 4 mm to 42 mm inclusive. These connectors are for use in fluid power and general applications within the limits of pressure and temperature. They are intended for the connection of plain end tubes and hose fittings to ports by ISO 6149-1, ISO 1179-1, and ISO 9974-1.
The below figure shows the cross sections and parts of typical 24°cone connectors with cutting rings.