ISO 4161:2012
(Main)Hexagon nuts with flange, style 2 — Coarse thread
Hexagon nuts with flange, style 2 — Coarse thread
ISO 4161:2012 specifies the characteristics of hexagon nuts with flange (style 2), with metric coarse threads from M5 to M20 inclusive, of product grade A for threads up to and including M16 and product grade B for threads above M16.
Écrous hexagonaux à embase cylindro-tronconique, style 2 — Filetage à pas gros
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 4161
Third edition
2012-09-01
Hexagon nuts with flange, style 2 —
Coarse thread
Écrous hexagonaux à embase cylindro-tronconique, style 2 —
Filetage à pas gros
Reference number
ISO 4161:2012(E)
©
ISO 2012
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ISO 4161:2012(E)
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ii © ISO 2012 – All rights reserved
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ISO 4161:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Dimensions . 1
4 Requirements and reference International Standards . 4
5 Designation . 4
Annex A (informative) Gauging of hexagon nuts with flange . 5
Bibliography . 7
© ISO 2012 – All rights reserved iii
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ISO 4161:2012(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 4161 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 12, Fasteners with
internal metric thread.
This third edition cancels and replaces the second edition (ISO 4161:1999), of which it constitutes a minor revision.
iv © ISO 2012 – All rights reserved
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INTERNATIONAL STANDARD ISO 4161:2012(E)
Hexagon nuts with flange, style 2 — Coarse thread
1 Scope
This International Standard specifies the characteristics of hexagon nuts with flange (style 2), with metric
coarse threads from M5 to M20 inclusive, of product grade A for threads up to and including M16 and product
grade B for threads above M16.
If, in special cases, specifications other than those listed in this International Standard are required, they can be
selected from existing International Standards, for example ISO 261, ISO 724, ISO 898-2, ISO 965-2 and ISO 3506-2.
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 225, Fasteners — Bolts, screws, studs and nuts — Symbols and descriptions of dimensions
ISO 261, ISO general purpose metric screw threads — General plan
ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with
specified property classes – Coarse thread and fine pitch thread
ISO 965-2, ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general
purpose external and internal screw threads — Medium quality
ISO 3269, Fasteners — Acceptance inspection
ISO 3506-2, Mechanical properties of corrosion-resis
...
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