DIN EN ISO 9974-2:2000 通用和液压传动用联接件.用ISO261弹性螺纹或金属与金属密封的气门和双头螺栓端头.第2部分:(E型)带弹性密封的双头螺拴端头
Connections for general use and fluid power - Ports and studs ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 2: Stud ends with elastomeric sealing (type E) (ISO 9974-2:1996); German version EN ISO 9974-2:2000