The male has a 240 Cone and a straight thread. The three female connectors have straight threads and a sealing surface. The seal takes place between the 240 Cone on the male connector and the sealing areas on the females.
Fittings are available in two series: the DIN 2353 L (light) and the DIN 2353 S (heavy) classes. Each series has its own tube sizes and thread dimensions as shown in the table below: