ISO 10597:2012

INTERNATIONAL ISO
STANDARD 10597
Third edition
2012-03-01
Road vehicles — Flat attachment fixing
nuts for commercial vehicles — Test
methods
Véhicules routiers — Écrous de fixation des roues à attache plate pour
véhicules utilitaires — Méthodes d’essai
Reference number
ISO 10597:2012(E)
©
ISO 2012

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ISO 10597:2012(E)
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ISO 10597:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Test method for nut body . 1
3.1 Proof load test procedure . 1
3.2 Rejection criteria . 3
4 Nut assembly test methods . 4
4.1 Torque/tension — Clamping force . 4
4.2 Torque/tension — Retorque . 5
Bibliography . 6
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ISO 10597:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 10597 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 19, Wheels.
This third edition cancels and replaces the second edition (ISO 10597:2004), of which this constitutes a
minor revision.
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ISO 10597:2012(E)
Introduction
This International Standard was developed to provide test methods for evaluating flat attachment fixing nuts for
use as wheel fasteners. The test methods are based on the needs of the wheel in order to function properly.
These fasteners were first standardized dimensionally in ISO 7575 and this International Standard extends this
standardization.
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INTERNATIONAL STANDARD ISO 10597:2012(E)
Road vehicles — Flat attachment fixing nuts for commercial
vehicles — Test methods
1 Scope
This International Standard specifies test methods and performance requirements for ensuring proper wheel or
rim assembly on road vehicles by means of hexagonal nuts with a flat seating captive washer used with 18 mm,
20 mm and 22 mm studs. It is applicable to commercial vehicles as defined in ISO 3833 and to those nuts as
specified in ISO 7575. It is not applicable to fasteners for less common or special applications.
2 Normative references
The following referenced documents are indispensable for the application 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 6157-2, Fasteners — Surface discontinuities — Part 2: Nuts
3 Test method for nut body
3.1 Proof load test procedure
Use only fully processed nut assemblies with required corrosion protection which are production parts intended
for the vehicle.
Measure the initial height of the nut, H, before beginning the proof load/compression test.
Load the nut on a threaded fixture or bolt as shown in Figure 1 or 2. The complete nut assembly shall be loaded
axially through the threads three times to a load of 0,6 × proof load (F).
Measure the final height of the nut, H.
After three loadings, apply a fourth loading of
...