NA 082

DIN Standards Committee Piping and Boiler Plant


Connections for general use and fluid power - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 1: Threaded ports


The document specifies dimensions for ports with ISO 261 threads and elastomeric (type E) or metal-to-metal (type B) sealing for general use and in fluid power applications with the stud ends detailed in EN ISO 9974-2 and EN ISO 9974-3. It also specifies test methods and the designation of these ports. Ports in accordance with this document may be used at working pressures up to 63 MPa (630 bar).





Planned document number

DIN EN ISO 9974-1 rev

Project number


Responsible national committee

NA 082-00-07 AA - Compression couplings 

Responsible european committee

CEN/TC 459/SC 10 - Steel tubes, and iron and steel fittings 

Responsible international committee

ISO/TC 131/SC 4/WG 1 - Ports and connector stud ends 

previous edition(s)

Connections for general use and fluid power - Ports and studs ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 1: Threaded ports (ISO 9974-1:1996); German version EN ISO 9974-1:2000

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