ISO 3186:2008

INTERNATIONAL ISO
STANDARD 3186
Second edition
2008-08-15


Aerospace — Bolts, large bihexagonal
head, normal shank, short or medium
length MJ threads, metallic material,
coated or uncoated, strength classes
1 250 MPa to 1 800 MPa — Dimensions
Aéronautique et espace — Vis à tête bihexagonale large, avec tige
normale et filetages MJ courts ou de longueur moyenne, en matériau
métallique, revêtues ou non revêtues, des classes de résistance
1 250 MPa à 1 800 MPa — Dimensions




Reference number
ISO 3186:2008(E)
©
ISO 2008

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ISO 3186:2008(E)
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ii © ISO 2008 – All rights reserved

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ISO 3186:2008(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 3186 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4,
Aerospace fastener systems.
This second edition cancels and replaces the first edition (ISO 3186:1994), which has been technically revised.

© ISO 2008 – All rights reserved iii

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INTERNATIONAL STANDARD ISO 3186:2008(E)

Aerospace — Bolts, large bihexagonal head, normal shank,
short or medium length MJ threads, metallic material, coated or
uncoated, strength classes 1 250 MPa to 1 800 MPa —
Dimensions
1 Scope
This International Standard specifies the dimensions of large bihexagonal head bolts, with close or large
tolerance normal shank and short or medium length MJ threads, in metallic material, coated or uncoated, with
strength classes 1 250 MPa to 1 800 MPa.
This International Standard is applicable to the compilation of aerospace product standards.
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 286-2, ISO system of limits and fits — Part 2: Tables of standard tolerance grades and limit deviations for
holes and shafts
ISO 3353-1, Aerospace — Lead and runout threads — Part 1: Rolled external threads
ISO 4095, Aerospace — Bihexagonal drives — Wrenching configuration — Metric series
ISO 5855-2, Aerospace — MJ threads —
...