BS ISO 6149-4: 2006 Connections for hydraulic fluid power and general use - Ports and stud ends with ISO 261 metric threads and O-ring sealing - Part 4: Dimensions, design, test methods and requirements for external hex and internal hex port plugs

The International Organization for Standardization (ISO). First edition, 2006-05-15. 0 p. This part of ISO 6149 specifies dimensions and performance requirements for external hex and internal hex port plugs for use with ISO 6149-1 ports.
Port plugs in accordance with this part of ISO 6149 can be used at working pressures up to 63 MPa (630 bar1)). The permissible working pressure depends upon the plug end size, materials, design, working conditions, application, etc.