SIST EN ISO 3266:2010

SLOVENSKI STANDARD
SIST EN ISO 3266:2010
01-oktober-2010
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Forged steel eyebolts grade 4 for general lifting purposes (ISO 3266:2010)
Geschmiedete Ringschrauben aus Stahl, Güteklasse 4, für allgemeine Hebezwecke
(ISO 3266:2010)
Anneaux à tige de classe 4 en acier forgé pour applications générales de levage (ISO
3266:2010)
Ta slovenski standard je istoveten z: EN ISO 3266:2010
ICS:
53.020.30 Pribor za dvigalno opremo Accessories for lifting
equipment
SIST EN ISO 3266:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 3266:2010

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SIST EN ISO 3266:2010


EUROPEAN STANDARD
EN ISO 3266

NORME EUROPÉENNE

EUROPÄISCHE NORM
May 2010
ICS 53.020.30
English Version
Forged steel eyebolts grade 4 for general lifting purposes (ISO
3266:2010)
Anneaux à tige de classe 4 en acier forgé pour applications Geschmiedete Ringschrauben aus Stahl, Güteklasse 4, für
générales de levage (ISO 3266:2010) allgemeine Hebezwecke (ISO 3266:2010)
This European Standard was approved by CEN on 15 April 2010.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.






EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3266:2010: E
worldwide for CEN national Members.

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SIST EN ISO 3266:2010
EN ISO 3266:2010 (E)
Contents Page
Foreword .3
Annex ZA (informative)  Relationship between this International Standard and the Essential
Requirements of EU Directive 2006/42/EC .4

2

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SIST EN ISO 3266:2010
EN ISO 3266:2010 (E)
Foreword
This document (EN ISO 3266:2010) has been prepared by Technical Committee ISO/TC 111 "Round steel
link chains, chain slings, components and accessories" in collaboration with Technical Committee
CEN/TC 168 “Chains, ropes, webbing, slings and accessories - Safety” the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by November 2010, and conflicting national standards shall be withdrawn
at the latest by November 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 3266:2010 has been approved by CEN as a EN ISO 3266:2010 without any modification.
3

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SIST EN ISO 3266:2010
EN ISO 3266:2010 (E)
Annex ZA
(informative)


Relationship between this International Standard and the Essential
Requirements of EU Directive 2006/42/EC
This International Standard has been prepared under a mandate given to CEN by the European Commission
the European Free Trade Association to provide one means of conforming to Essential Requirements of the
New Approach Directive 2006/42/EC.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the normative clauses of
this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of
conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations.

Table ZA.1 — Correspondence between this International Standard and Directive 2006/42/EC
Clauses/subclauses of this Essential Requirements (ERs) of EU Qualifying
International Standard Directive 2006/42/EC remarks/Notes
1 4.1
5, 6, 7, 8, 9, 10, 12, 13 4.1.2.5 d), f)
14, 15 4.3.2 CE marking is mandatory
16 4.4.1


WARNING: Other requirements and other EU Directives may be applicable to the products falling within the
scope of this standard.
4

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SIST EN ISO 3266:2010

INTERNATIONAL ISO
STANDARD 3266
Second edition
2010-05-01


Forged steel eyebolts grade 4 for general
lifting purposes
Anneaux à tige de classe 4 en acier forgé pour applications générales
de levage




Reference number
ISO 3266:2010(E)
©
ISO 2010

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SIST EN ISO 3266:2010
ISO 3266:2010(E)
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All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO 2010 – All rights reserved

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SIST EN ISO 3266:2010
ISO 3266:2010(E)
Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 List of significant hazards .4
5 Dimensions and tolerances.4
6 Screw threads .6
7 Workmanship .7
8 Material .7
9 Heat treatment.8
10 Hardness.8
11 Mechanical properties.8
12 Type test .8
13 Manufacturing tests.10
14 Marking .11
15 Manufacturer's declaration.12
16 Information for use .12
Annex A (informative) Recommendations for the selection, care and use of eyebolts.13
Bibliography.16

© ISO 2010 – All rights reserved iii

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SIST EN ISO 3266:2010
ISO 3266:2010(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 3266 was prepared by Technical Committee ISO/TC 111, Round steel link chains, chain slings,
components and accessories, Subcommittee SC 3, Components and accessories.
This second edition cancels and replaces the first edition (ISO 3266:1984), which has been technically revised.

iv © ISO 2010 – All rights reserved

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SIST EN ISO 3266:2010
ISO 3266:2010(E)
Introduction
This document is a type-C standard as stated in ISO 12100.
The equipment concerned as well as the extent to which hazards, hazardous situations and hazardous events
are covered are indicated in the scope of this International Standard.
When provisions of this type-C standard are different from those which are stated in type-A or type-B
standards, the provisions of this type-C standard take precedence over the provisions of the other standards,
for equipment that have been designed and built according to the provisions of this type-C standard.

© ISO 2010 – All rights reserved v

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SIST EN ISO 3266:2010

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SIST EN ISO 3266:2010
INTERNATIONAL STANDARD ISO 3266:2010(E)

Forged steel eyebolts grade 4 for general lifting purposes
1 Scope
This International Standard specifies the general characteristics, performance and critical dimensions
necessary for interchangeability and compatibility with other components, of forged steel eyebolts grade 4 for
general lifting purposes. These eyebolts can be used for axial and inclined loading.
This International Standard specifies the dimensions of the eyes of eyebolts permitting direct connection with
shackles of the same working load limit as those defined in ISO 2415. These dimensions also allow designs
with a larger eye which can permit direct connection with sling hooks of similar working load limit.
This International Standard covers all significant hazards, hazardous situations and events relevant to
eyebolts grade 4 as defined in Clause 4.
This International Standard is applicable to eyebolts grade 4 for use in the temperature range of −20 ºC to
200 ºC.
This International Standard is not applicable to eyebolts which are not forged in one piece.
This International Standard is not applicable to forged steel eyebolts grade 4 manufactured before the date of
its publication as an International Standard.
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 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 148-2, Metallic materials — Charpy pendulum impact test — Part 2: Verification of testing machines
ISO 261, ISO general purpose screw threads — General plan
ISO 643, Steels — Micrographic determination of the apparent grain size
ISO 965-1, ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F, G, H,
K, N, T)
ISO 7500-1:2004, Metallic materials — Verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Verification and calibration of the force-measuring system
ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
© ISO 2010 – All rights reserved 1

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SIST EN ISO 3266:2010
ISO 3266:2010(E)
EN 10228-1, Non-destructive testing of steel forgings — Part 1: Magnetic particle inspection
EN 10228-2, Non-destructive testing of steel forgings — Part 2: Penetrant testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
nominal size
thread size
size related to the nominal diameter of the thread, d, of an eyebolt
3.2
working load limit
WLL
maximum mass that an eyebolt is authorized to sustain along its centreline axis in general lifting service
3.3
traceability code
series of letters and/or numbers marked on an eyebolt that enables its manufacturing history, including the
identity of the cast of steel used, to be traced
3.4
proof force
force applied to the eyebolt during the manufacturing proof test
3.5
breaking force
maximum force reached during the static tensile test of the eyebolt at which the eyebolt fails to retain the load
3.6
axial loading
F
a
loading along the centreline axis of the eyebolt
See Figure 1.
3.7
inclined loading
F
β
loading at an angle β to the centreline axis
See Figure 1.
3.8
lot
specified number of eyebolts from which samples are selected for testing purposes and which have been
manufactured from the same cast of steel and subjected to the same heat treatment
NOTE Adapted from ISO 8539:2009, definition 3.6.
2 © ISO 2010 – All rights reserved

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SIST EN ISO 3266:2010
ISO 3266:2010(E)

Key
F axial loading
a
F inclined loading
β
β inclined loading angle
Figure 1 — Axial and inclined loading of an eyebolt
© ISO 2010 – All rights reserved 3

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SIST EN ISO 3266:2010
ISO 3266:2010(E)
4 List of significant hazards
This clause contains all the significant hazards, risk areas and hazardous situations and events as far as they
are dealt with in this International Standard, identified by risk assessment as significant according to
ISO 14121-1 for this type of machinery and which require action to eliminate or reduce the risk. See Table 1.
Table 1 — Hazards and associated requirements
Hazards identified in Annex A of Causes of failure Relevant clause of
ISO 14121-1:2007 this International
Standard
Injury or death due to being hit by a Inadequate strength and toughness 7
falling load arising from failure of the
8
eyebolt from the following causes:
9
10
11
12
13
Dimensional incompatibility and errors of fitting 5
6
7
14
Incorrect selection 14
15
16
Annex A
Inadequate information for use 14
16

5 Dimensions and tolerances
The dimensions of the eyebolt shall conform to the requirements of Figure 2 and Table 2.
A positive local deviation of roundness of +5 % is permitted in respect of the internal diameter, E.
A tolerance of symmetry of 5 % on the diameter, F, is permitted.
4 © ISO 2010 – All rights reserved

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SIST EN ISO 3266:2010
ISO 3266:2010(E)

Key
B diameter of collar

d nominal thread diameter
d shank diameter
g
E internal diameter of the eye

F diameter of cross section of the eye
H height from underside of collar to end of threaded shank
r radius of under cut and thread run-out
s distance from underside of collar to the first thread
Figure 2 — Dimensions of eyebolts
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SIST EN ISO 3266:2010
ISO 3266:2010(E)
Table 2 — Dimensions of eyebolts
1 2 3 4 5 6 7 8
Axial working E H F r B s
Nominal size
load limit
Nominal min. max. min. min.
diameter of
thread
d
WLL 1,5d 0,25d
20 × WLL 14 × WLL (26 × WLL ) + 5
mm t mm mm mm mm mm mm
8 9 12 6 1 17 2
0,2
10 11 15 8 1 20 3
0,32
12 13 18 9 1 21 3
0,4
16 18 24 13 1 28 4
0,8
20 25 30 18 1 38 5
1,6
24 32 36 22 2 46 6
2,5
30 40 45 28 2 57 8
4
36 50 54 35 3 70 9
6,3
42 57 63 40 3 79 11
8
48 63 72 44 3 87 12
10
52 71 78 49 3 97 13
12,5
56 80 84 56 4 109 14
16
64 89 96 63 4 121 16
20
Nominal
diameter of
thread × pitch

d × P
100 108 70 4 135 18
25
72 × 6
113 120 79 4 152 20
32
80 × 6
126 135 89 5 169 23
40
90 × 6
141 150 99 5 189 25
50
100 × 6

6 Screw threads
The threads of the shanks shall comply with ISO 261, coarse pitch series, tolerance class 6 g to ISO 965-1.
Dimension d equals the minor diameter of the thread minus 0,3 mm.
g
The portion of the thread at the end of the screw thread shall have a run-out and the collar shall be recessed
as shown in Figure 2.
6 © ISO 2010 – All rights reserved

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SIST EN ISO 3266:2010
ISO 3266:2010(E)
7 Workmanship
The eyebolt, including the shank, shall be forged in one piece without w
...