AENOR UNE-EN ISO 9974-2:2001
一般用途和流体动力连接 带弹性密封或金属对金属密封的 ISO 261 螺纹的端口和螺柱端 第2部分:带弹性密封的螺柱端(E 型) (ISO 9974-2:1996)
CONNECTIONS FOR GENERAL USE AND FLUID POWER - PORTS AND STUD 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).