ISO 15172:2005

INTERNATIONAL ISO
STANDARD 15172
First edition
2005-07-01

Road vehicles — Wheels — Nut seat
strength tests
Véhicules routiers — Roues — Essai de résistance des sièges d'écrou




Reference number
ISO 15172:2005(E)
©
ISO 2005

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ISO 15172:2005(E)
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ii © ISO 2005 – All rights reserved

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ISO 15172:2005(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
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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 15172 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 19, Wheels.
© ISO 2005 – All rights reserved iii

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INTERNATIONAL STANDARD ISO 15172:2005(E)

Road vehicles — Wheels — Nut seat strength tests
1 Scope
This International Standard specifies a test method to evaluate the strength of the nut seat of wheels intended
for use on passenger cars, light trucks and multi-purpose vehicles. While this test ensures the minimum
strength of the nut seat, the wheel must also have a degree of flexibility to allow torque retention. This test
evaluates the axial strength of the nut seat. In addition, the informative annex provides recommended bearing
area to ensure enough strength for the rotational force in tightening a nut against the nut seat.
2 Test procedures
2.1 General
The principle of this test is to apply an axial load to the nut seat and determine permanent deformation of the
nut seat. An additional test to measure yield strength is also specified.
2.2 Wheels for test
Use only fully processed wheels including all coatings representative of production parts intended for the
vehicle.
2.3 Test equipment
The test equipment shall be capable of supporting the complete wheel mounting area with a rigid flat surface
which is dimensionally representative of the vehicle hub (see Figure 1). The equipment shall provide a
hardened (R 45 min) punch or load applicator with a shape designed to match the seat face and the fastener
c
contact area representative of that specified for the wheel. The punch or load applicator shall provide a
me
...