ISO/TS 11686:2017

TECHNICAL ISO/TS
SPECIFICATION 11686
First edition
2017-10
Connectors for fluid power and
general use — Assembly instructions
for connectors with adjustable stud
ends and O-ring sealing
Raccordements pour applications générales et transmissions
hydrauliques — Instructions d’assemblage pour des connecteurs avec
des éléments mâles ajustables et joint torique
Reference number
ISO/TS 11686:2017(E)
©
ISO 2017

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ISO/TS 11686:2017(E)

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© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

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ISO/TS 11686:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Instructions for the assembly of connectors with adjustable stud ends and O-ring sealing 2
4.1 Preparation prior to assembly . 2
4.2 Assembly . 3
4.2.1 Illustration . 3
4.2.2 Location of O-ring (position 1 in Figure 1) . 3
4.2.3 Positioning of locknut (position 2 in Figure 1) . 3
4.2.4 Installation of connector into the port (position 3 in Figure 1) . 3
4.2.5 Connector adjustment (position 4 in Figure 1) . 3
4.2.6 Final tightening (position 5 in Figure 1) . 4
4.2.7 Final inspection . 4
Annex A (informative) Identification of ports, stud ends and plugs and potential for
incompatible intermixing . 5
Bibliography .11
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ISO/TS 11686:2017(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee
SC 4, Connectors and similar products and components.
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ISO/TS 11686:2017(E)

Introduction
In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under
pressure within an enclosed circuit. In general applications, a fluid may be conveyed under pressure.
Components may be connected through their ports by connections (connectors) and conductors (tubes
and hoses). Tubes are rigid conductors while hoses are flexible conductors.
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TECHNICAL SPECIFICATION ISO/TS 11686:2017(E)
Connectors for fluid power and general use — Assembly
instructions for connectors with adjustable stud ends and
O-ring sealing
1 Scope
This document provides common installation instructions for all connectors that have adjustable
stud ends and O-ring sealing. Conformance with the requirements of this document will result in a
considerable reduction of leaks in hydraulic systems.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1179-1, Connections for general use and fluid power — Ports and stud ends with ISO 228-1 threads with
elastomeric or metal-to-metal sealing — Part 1: Threaded ports
ISO 1179-2, Connections for general use and fluid power — Ports and stud ends with ISO 228-1 threads with
elastomeric or metal-to-metal sealing — Part 2: Heavy-duty (S series) and light-duty (L series) stud ends
with elastomeric sealing (type E)
ISO 1179-3, Connections for general use and fluid power — Ports and stud ends with ISO 228-1 threads
with elastomeric or metal-to-metal sealing — Part 3: Light-duty (L series) stud ends with sealing by O-ring
with retaining ring (types G and H)
ISO 1179-4, Connections for general use and fluid power — Ports and stud ends with ISO 228-1 threads
with elastomeric or metal-to-metal sealing — Part 4: Stud ends for general use only with metal-to-metal
sealing (type B)
ISO 5598, Fluid power systems and components — Vocabulary
ISO 6149-1, Connections for hydraulic fluid power and general use — Ports and stud ends with ISO 261
metric threads and O-ring sealing — Part 1: Ports with truncated housing for O-ring seal
ISO 6149-2, Connections for hydraulic fluid power and general use — Ports and stud ends with ISO 261
metric threads and O-ring sealing — Part 2: Dimensions, design, test methods and requirements for heavy-
duty (S series) stud ends
ISO 6149-3, Connections for hydraulic fluid power and general use — Ports and stud ends with ISO 261
metric threads and O-ring sealing — Part 3: Dimensions, design, test methods and requirements for light-
duty (L series) stud ends
ISO 6149-4, Connections for hydraulic 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
ISO 9974-1, Connections for general use and fluid power — Ports and stud ends with ISO 261 threads with
elastomeric or metal-to-metal sealing — Part 1: Threaded ports
ISO 9974-2, Connections for general use and fluid power — Ports and stud ends with ISO 261 threads with
elastomeric or metal-to-metal sealing — Part 2: Stud ends with elastomeric sealing (type E)
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ISO/TS 11686:2017(E)

ISO 9974-3, 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 9974-4, 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 11926-1, Co
...