KS B ISO 9974-3-2004(2009) 通用和流体动力连接件ISO 261弹性或金属对金属密封螺纹的端口和螺柱端第3部分:金属对金属密封螺柱端（B型）
Connections for general use and fluid power－Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing－Part 3：Stud ends with metal-to-metal sealing (type B)