UNE-EN ISO 9974-3:2001 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). (ISO 9974-3:1996).
2001UNE-EN ISO 9974-3:2001 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). (ISO 9974-3:1996).