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ISO 6149-4:2017

Действует
Connections for fluid power and general use -- Ports and stud ends with ISO 261 metric threads and O-ring sealing -- Part 4: Dimensions, design, test methods and requirements for external hex and internal hex port plugs — 18 стр.
ICS
23.100.40 Piping and couplings / Трубопроводы и соединения