This part of SAE J1926 specifies dimensions for fluid power and general use ports with inch threads in accordance with ASME B1.1 for use with adjustable and nonadjustable stud ends shown in SAE J1926-2 and SAE J1926-3.
Ports in accordance with this part of SAE J1926 may be used at working pressures up to 63 MPa for nonadjustable stud ends and up to 40 MPa for adjustable stud ends. The permissible working pressure depends upon materials, design, working conditions, application, etc.
For threaded ports and stud ends specified in new designs for hydraulic fluid power applications, only ISO 6149 shall be used. Threaded ports and stud ends in accordance with ISO 1179, ISO 9974, and ISO 11926 shall not be used for new designs in hydraulic fluid power applications.