International Organization for Standardization

Connections for general use and fluid power Ports and stud ends with  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 - First Edition
 N 9974-4

Annotation

This part of ISO 9974 specifies dimensions and performance requirements for metric external hex and internal hex port plugs for use with ISO 9974-1 ports.

Port plugs in accordance with this part of ISO 9974 can be used at working pressures up to 63 MPa (630 bar1)). The permissible working pressure depends upon the plug end size, materials, design, working conditions, application, etc.

Conformance to the dimensional information in this part of ISO 9974 does not guarantee rated performance. It is important that each manufacturer perform testing according to the specification contained in this part of ISO 9974 to assure that components comply with the performance ratings.

NOTE The Introduction of this part of ISO 9974 gives recommendations for ports and stud ends to be used for new designs in hydraulic fluid power applications.

1) 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

Автоматический перевод:

Связи для общего использования и Портов гидравлической энергии и жеребца заканчиваются резьбой ISO 261 с эластомерным или уплотняющей деталью от металла к металлу 4: Измерения, дизайн, методы испытаний и требования для внешних шестнадцатеричных и внутренних шестнадцатеричных штепселей порта - Первый Выпуск