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This part of ISO 15171 specifies dimensions, performance requirements and test procedures for the male quick-action half of a metric coupling with an M14 × 1,5 straight stud end to mate with an ISO 6149-1 port, to be used for diagnostic purposes. Couplings in accordance with this part of ISO 15171 are not designed to connect under pressure. The coupling is designed for use in hydraulic systems that use mineral oil.

This part of ISO 15171 does not apply to the female half of the mating hydraulic quick-action coupling, which is not on the machine.

Couplings in accordance with this part of ISO 15171 may be used at a maximum working pressure of 40 MPa [400 bar¹⁾]. The permissible working pressure depends upon the materials, design, working conditions, application, etc.

Conformance to the dimensional information in this part of ISO 15171 does not guarantee rated performance. Each manufacturer should perform testing in accordance with the specification contained in this part of ISO 15171 to assure that components comply with the performance rating.

¹⁾ 1 bar = 0,1 MPa = 10⁵ Pa; 1 Pa = 1 N/m²