This International Standard lays down dimensions and gives specifications for a fluid power metric parallel-threaded port.
This International Standard is intended for nominal pressures up to 400 bar (40 000 kPa). The permissible working pressure depends upon materials, design, working pressure, application, etc.
SIS SS-ISO 6149:1985 history
1985SIS SS-ISO 6149:1985 Fluid power systems and components - Metric ports - Dimensions and design