BS EN ISO 9974-2:2000 普通和液壓傳動用聯接件.用ISO 261彈性螺紋或金屬與金屬間密封的氣門和雙頭螺栓端頭.(E型)彈性密封的雙頭螺栓端頭
Connections for general use and fluid power - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Stud ends with elastomeric sealing (type E)