SS-ISO-9974-4 Complete Document History
Connections for general use and fluid power - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 4: Dimensions, design, test methods and requirements for external hex and internal hex port plugs (ISO 9974-4:2016, IDT)

Complete Current Edition:
   2017 EDITION - ENGLISH LANGUAGE EDITION - Feb. 7, 2017

Obsolete Revision Information:
   2006 EDITION - ENGLISH LANGUAGE EDITION - June 30, 2006