SIST EN ISO 898-5:2012

Mechanical properties of fasteners made of carbon steel and alloy steel - Part 5: Set screws and similar threaded fasteners with specified hardness classes - Coarse thread and fine pitch thread (ISO 898-5:2012)

This part of ISO 898 specifies mechanical and physical properties of set screws and similar threaded fasteners made of carbon steel or alloy steel when tested at an ambient temperature range of 10 °C to 35 °C. Fasteners - the term used when set screws and similar threaded fasteners are considered all together - that conform to the requirements of this part of ISO 898 are evaluated at that ambient temperature range. Fasteners according to this part of ISO 898 are classified to specified hardness classes and are intended for use under compressive stress only. NOTE Fasteners conforming to the requirements of this part of ISO 898 are used in applications ranging from - 50 °C to +150 °C. Users are advised to consult an experienced fastener metallurgist for temperatures outside the range of - 50 °C to +150 °C and up to a maximum temperature of +300 °C when determining appropriate choices for a given application. This part of ISO 898 applies to set screws and similar fasteners a) made of carbon steel or alloy steel, b) having a triangular ISO metric screw thread according to ISO 68-1, c) with a coarse pitch thread M1,6 to M30, and fine pitch thread M8?1 to M30?2, d) with diameter/pitch combinations according to ISO 261 and ISO 262, e) having thread tolerances according to ISO 965-1, ISO 965-2 and ISO 965-4. It does not specify requirements for such properties as - tensile strength (see ISO 898-1), - shear strength, - weldability, - corrosion resistance, - ability to withstand temperatures above + 150 °C or below - 50 °C.

Mechanische Eigenschaften von Verbindungselementen aus Kohlenstoffstahl und legiertem Stahl - Teil 5: Gewindestifte und ähnliche Verbindungselemente mit Gewinde in festgelegten Härteklassen - Regelgewinde und Feingewinde (ISO 898-5:2012)

Dieser Teil von ISO 898 legt mechanische und physikalische Eigenschaften für Gewindestifte und ähnliche Verbindungselemente mit Gewinde aus Kohlenstoff¬stahl und legiertem Stahl fest, die in einem Bereich der Umgebungstemperatur von 10 °C bis 35 °C geprüft werden. Verbindungselemente (dieser Begriff wird verwendet, wenn Gewindestifte und ähnliche Verbindungselemente mit Gewinde gleichzeitig angesprochen werden), die den Anforderungen dieser Norm entsprechen, werden in diesem Bereich der Umgebungs-temperatur bewertet.
Verbindungselemente nach diesem Teil von ISO 898 werden in festgelegte Härteklassen eingeteilt und sind nur zum Einsatz unter Druckbelastung vorgesehen.
ANMERKUNG   Verbindungselemente, die den Anforderungen dieses Teils von ISO 898 entsprechen, werden für Anwendungen in dem Bereich zwischen 50 °C und 150 °C eingesetzt. Anwender sollten für Temperaturen außerhalb des Bereiches von 50 °C und 150 °C sowie bis zu einer Höchsttemperatur von 300 °C einen erfahrenen Metallurgen für mechanische Verbindungselemente konsultieren, um die geeignete Wahl für die vorgesehene Anwendung zu treffen.
Dieser Teil von ISO 898 gilt für Gewindestifte und ähnliche Verbindungselemente mit Gewinde:
a)   aus Kohlenstoffstahl und legiertem Stahl;
b)   mit Metrischem ISO-Gewinde nach ISO 68-1;
c)   mit Regelgewinde M1,6 bis M30 und Feingewinde M81 bis M302;
d)   mit Durchmesser-Steigungs-Kombinationen nach ISO 261 und ISO 262;
e)   mit Gewindetoleranzen nach ISO 965-1, ISO 965-2 und ISO 965-4.
Er legt keine Anforderungen für Eigenschaften fest wie
-   Zugfestigkeit (siehe ISO 898 1),
-   Scherfestigkeit,
-   Schweißbarkeit,
-   Korrosionsbeständigkeit oder
-   Warmfestigkeit über 150 °C oder Kaltzähigkeit unter 50 °C.

Caractéristiques mécaniques des éléments de fixation en acier au carbone et en acier allié - Partie 5: Vis sans tête et éléments de fixation filetés similaires de classes de dureté spécifiées - Filetages à pas gros et filetages à pas fin (ISO 898-5:2012)

L'ISO 898-5:2012 spécifie les caractéristiques mécaniques et physiques des vis sans tête et éléments de fixation filetés similaires en acier au carbone et en acier allié, essayés dans la plage de température ambiante de 10 °C à 35 °C. Les éléments de fixation (terme utilisé lorsque les vis sans tête et les éléments de fixation filetés similaires sont tous concernés) qui sont conformes aux exigences de l'ISO 898-5:2012 sont évalués dans cette plage de température.
Les éléments de fixation conformes à l'ISO 898-5:2012 sont spécifiés par classes de dureté et sont prévus pour être utilisés uniquement en compression.
L'ISO 898-5:2012 est applicable aux vis sans tête et éléments de fixation filetés similaires:
en acier au carbone ou en acier allié,
à filetage métrique ISO triangulaire conforme à l'ISO 68-1,
de filetage M1,6 à M30 pour les pas gros, et de filetage M8 × 1 à M30 × 2 pour les pas fins,
de combinaisons diamètre/pas conformes à l'ISO 261 et à l'ISO 262,
de tolérance de filetage conforme à l'ISO 965-1 et ISO 965-2.

Mehanske lastnosti veznih elementov iz ogljikovega in legiranega jekla - 5. del: Navojni zatiči in podobni vijaki z navojem določenega trdotnega razreda (ISO 898-5:2012)

Ta del standarda ISO 898 določa mehanske in fizikalne lastnosti navojnih zatičev in podobnih vijakov z navojem, izdelanih iz ogljikovega jekla ali jeklene zlitine, kadar se preskušajo pri temperaturi okolja, in sicer od 10 °C do 35 °C. Vezni elementi (izraz, ki se uporablja za vse navojne zatiče in podobne vijake z navojem skupaj), ki izpolnjujejo zahteve iz tega dela standarda ISO 898, se ovrednotijo pri tem temperaturnem razponu okolja. Vezni elementi v skladu s tem delom standarda ISO 898 so razvrščeni v določene trdotne razrede in namenjeni samo za uporabo pri tlačni napetosti. OPOMBA: Vezni elementi, ki izpolnjujejo zahteve iz tega dela standarda ISO 898, se uporabljajo pri temperaturah od –50 °C do +150 °C. Uporabnikom se priporoča, da se glede ustrezne izbire za določeno uporabo pri temperaturah zunaj območja –50 °C do +150 °C in do najvišje temperature +300 °C posvetujejo z izkušenim metalurgom za vezne elemente. Ta del standarda ISO 898 se uporablja za navojne zatiče in podobne vijake a) iz ogljikovega ali legiranega jekla, b) s trikotnim ISO metrskim vijačnim navojem v skladu s standardom ISO 68-1, c) z grobim navojem M1,6 do M30 in drobnim navojem M8x1 do M30x2, d) s kombinacijami premer/navoj v skladu s standardom ISO 261 in ISO 262, e) s tolerancami navojev v skladu s standardi ISO 965-1, ISO 965-2 in ISO 965-4. Ne določa zahtev za lastnosti, kot so – natezna trdnost (glejte standard ISO 898-1), – strižna trdnost, – varivost, – odpornost proti koroziji, – vzdržljivost pri temperaturah nad +150 °C ali pod –50 °C.

General Information

• Status: Published
• Public Enquiry End Date: 19-Aug-2010
• Publication Date: 08-Jul-2012
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: ISEL - Mechanical elements
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Jun-2012
• Due Date: 23-Aug-2012
• Completion Date: 09-Jul-2012
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: EN ISO 898-5:2012 - Mechanical properties of fasteners made of carbon steel and alloy steel - Part 5: Set screws and similar threaded fasteners with specified hardness classes - Coarse thread and fine pitch thread (ISO 898-5:2012)

Relations

• Replaces: SIST EN ISO 898-5:2001 - Mechanical properties of fasteners made of carbon steel and alloy steel - Part 5: Set screws and similar threaded fasteners not under tensile stresses (ISO 898-5:1998)
• Effective Date: 01-Sep-2012

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 898-5:2012
01-september-2012
1DGRPHãþD
SIST EN ISO 898-5:2001
0HKDQVNHODVWQRVWLYH]QLKHOHPHQWRYL]RJOMLNRYHJDLQOHJLUDQHJDMHNODGHO
1DYRMQL]DWLþLLQSRGREQLYLMDNL]QDYRMHPGRORþHQHJDWUGRWQHJDUD]UHGD,62

Mechanical properties of fasteners made of carbon steel and alloy steel - Part 5: Set
screws and similar threaded fasteners with specified hardness classes - Coarse thread
and fine pitch thread (ISO 898-5:2012)
Mechanische Eigenschaften von Verbindungselementen aus Kohlenstoffstahl und
legiertem Stahl - Teil 5: Gewindestifte und ähnliche Verbindungselemente mit Gewinde
in festgelegten Härteklassen - Regelgewinde und Feingewinde (ISO 898-5:2012)
Caractéristiques mécaniques des éléments de fixation en acier au carbone et en acier
allié - Partie 5: Vis sans tête et éléments de fixation filetés similaires de classes de
dureté spécifiées - Filetages à pas gros et filetages à pas fin (ISO 898-5:2012)
Ta slovenski standard je istoveten z: EN ISO 898-5:2012
ICS:
21.060.10 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
SIST EN ISO 898-5:2012 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 898-5:2012

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SIST EN ISO 898-5:2012


EUROPEAN STANDARD
EN ISO 898-5

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2012
ICS 21.060.10 Supersedes EN ISO 898-5:1998
English Version
Mechanical properties of fasteners made of carbon steel and
alloy steel - Part 5: Set screws and similar threaded fasteners
with specified hardness classes - Coarse thread and fine pitch
thread (ISO 898-5:2012)
Caractéristiques mécaniques des éléments de fixation en Mechanische Eigenschaften von Verbindungselementen
acier au carbone et en acier allié - Partie 5: Vis sans tête et aus Kohlenstoffstahl und legiertem Stahl - Teil 5:
éléments de fixation filetés similaires de classes de dureté Gewindestifte und ähnliche Verbindungselemente mit
spécifiées - Filetages à pas gros et filetages à pas fin (ISO Gewinde in festgelegten Härteklassen - Regelgewinde und
898-5:2012) Feingewinde (ISO 898-5:2012)
This European Standard was approved by CEN on 31 May 2012.

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-CENELEC 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-CENELEC 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, Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 898-5:2012: E
worldwide for CEN national Members.

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SIST EN ISO 898-5:2012
EN ISO 898-5:2012 (E)
Contents Page
Foreword .3
2

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SIST EN ISO 898-5:2012
EN ISO 898-5:2012 (E)
Foreword
This document (EN ISO 898-5:2012) has been prepared by Technical Committee ISO/TC 2 "Fasteners" in
collaboration with Technical Committee CEN/TC 185 “Fasteners” the secretariat of which is held by DIN.
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 December 2012, and conflicting national standards shall be withdrawn
at the latest by December 2012.
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 supersedes EN ISO 898-5:1998.
According to the CEN/CENELEC Internal Regulations, the national standards organisations 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, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 898-5:2012 has been approved by CEN as a EN ISO 898-5:2012 without any modification.

3

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SIST EN ISO 898-5:2012

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SIST EN ISO 898-5:2012
INTERNATIONAL ISO
STANDARD 898-5
Third edition
2012-06-01
Mechanical properties of fasteners made
of carbon steel and alloy steel —
Part 5:
Set screws and similar threaded fasteners
with specified hardness classes —
Coarse thread and fine pitch thread
Caractéristiques mécaniques des éléments de fixation en acier au
carbone et en acier allié —
Partie 5: Vis sans tête et éléments de fixation filetés similaires de classes
de dureté spécifiées — Filetages à pas gros et filetages à pas fin
Reference number
ISO 898-5:2012(E)
©
ISO 2012

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SIST EN ISO 898-5:2012
ISO 898-5:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

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SIST EN ISO 898-5:2012
ISO 898-5:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 2
5 Designation system . 3
6 Materials . 3
7 Mechanical and physical properties . 4
8 Applicability of test methods . 5
8.1 Manufacturer’s inspection . 5
8.2 Supplier’s inspection . 5
8.3 Purchaser’s inspection . 5
9 Test methods . 6
9.1 Hardness test . 6
9.2 Decarburization test . 7
9.3 Carburization test .10
9.4 Proof torque test for hexagonal socket set screws and hexalobular socket set screws of
hardness class 45H . 11
10 Marking .13
10.1 General .13
10.2 Manufacturer’s identification mark .13
10.3 Marking set screws with hardness class .13
10.4 Marking of packages .13
Annex A (informative) Hydrogen embrittlement relief after electroplating of set screws .14
Bibliography .15
© ISO 2012 – All rights reserved iii

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SIST EN ISO 898-5:2012
ISO 898-5:2012(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 898-5 was prepared by Technical Committee ISO/TC 2, Fastener, Subcommittee SC 11, Fasteners with
metric external thread.
This third edition cancels and replaces the second edition (ISO 898-5:1998), which has been technically revised.
ISO 898 consists of the following parts, under the general title Mechanical properties of fasteners made of
carbon steel and alloy steel:
— Part 1: Bolts, screws and studs with specified property classes — Coarse thread and fine pitch thread
— Part 2: Nuts with specified property classes — Coarse thread and fine pitch thread
— Part 5: Set screws and similar threaded fasteners with specified hardness classes — Coarse thread and
fine pitch thread
— Part 6: Nuts with specified proof load values — Fine pitch thread
— Part 7: Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm
iv © ISO 2012 – All rights reserved

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SIST EN ISO 898-5:2012
INTERNATIONAL STANDARD ISO 898-5:2012(E)
Mechanical properties of fasteners made of carbon steel and
alloy steel —
Part 5:
Set screws and similar threaded fasteners with specified
hardness classes — Coarse thread and fine pitch thread
1 Scope
This part of ISO 898 specifies mechanical and physical properties of set screws and similar threaded fasteners
made of carbon steel or alloy steel when tested at an ambient temperature range of 10 °C to 35 °C. Fasteners (the
term used when set screws and similar threaded fasteners are considered all together) which conform to the
requirements of this part of ISO 898 are evaluated at that ambient temperature range.
Fasteners in conformance with this part of ISO 898 are classified to specified hardness classes and are
intended for use under compressive stress only.
NOTE Fasteners conforming to the requirements of this part of ISO 898 are used in applications ranging from -50 °C
to +150 °C. It is the responsibility of users to consult an experienced fastener metallurgist for temperatures outside the
range of -50 °C to +150 °C and up to a maximum temperature of +300 °C when determining appropriate choices for a
given application.
This part of ISO 898 is applicable to set screws and similar threaded fasteners:
— made of carbon steel or alloy steel,
— having a triangular ISO metric screw thread in conformance with ISO 68-1,
— with a coarse pitch thread of M1,6 to M30, and a fine pitch thread of M8×1 to M30×2,
— with diameter/pitch combinations in conformance with ISO 261 and ISO 262, and
— having thread tolerances in conformance with ISO 965-1 and ISO 965-2.
It does not specify requirements for such properties as
— tensile strength,
— shear strength,
— weldability,
— corrosion resistance, or
— the ability to withstand temperatures above +150 °C or below -50 °C.
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 965-1, ISO general-purpose metric screw threads — Tolerances — Part 1: Principles and basic data
© ISO 2012 – All rights reserved 1

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SIST EN ISO 898-5:2012
ISO 898-5:2012(E)
ISO 965-3, ISO general purpose metric screw threads — Tolerances — Part 3: Deviations for constructional
screen threads
ISO 6157-1, Fasteners — Surface discontinuities — Part 1: Bolts, screws and studs for general requirements
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6507-1, Metallic materials — Vickers 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 16426, Fasteners — Quality assurance system
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
base metal hardness
hardness closest to the surface (when traversing from core to outside diameter) just before an increase or
decrease occurs, denoting carburization or decarburization, respectively
3.2
carburization
result of increasing surface carbon to a content above that of the base metal
3.3
decarburization
loss of carbon at the surface of a steel fastener
3.4
partial decarburization
decarburization with sufficient loss of carbon to cause a lighter shade of tempered martensite and a
significantly lower hardness than that of the adjacent base metal, without, however, showing ferrite grains
under metallographic examination
3.5
ferritic decarburization
decarburization with sufficient loss of carbon to cause a lighter shade of tempered martensite and a significantly
lower hardness than that of the adjacent base metal, with the presence of ferrite grains or grain boundary
network under metallographic examination
3.6
complete decarburization
decarburization with sufficient carbon loss to show only clearly defined ferrite grains under metallographic examination
3.7
performance hardness
hardness determined on the surface as near as practicable to the centre position of the point end of the screw
4 Symbols and abbreviated terms
For the purposes of this document, the symbols and abbreviated terms given in ISO 225 and ISO 965-1 and
the following apply.
2 © ISO 2012 – All rights reserved

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SIST EN ISO 898-5:2012
ISO 898-5:2012(E)
Symbol or Meaning Unit
abbreviated
term
D Diameter of indenter for Brinell hardness test mm
d Nominal thread diameter mm
E
Height of non-decarburized zone in thread mm
e
Width across corners mm
F
Applied force to determine Brinell hardness N
G
Depth of complete decarburization in thread mm
H
Height of fundamental triangle mm
H Height of external thread in maximum material condition mm
1
P
Pitch of thread mm
s
Width across flats mm
t
Depth of the internal driving feature mm
min Abbreviated subscript added to symbol to denote minimum value –
5 Designation system
The hardness classes are designated as specified in Table 1.
The numerical part of the designation represents 1/10 of the minimum Vickers hardness.
The letter H refers to the hardness.
Table 1 — Designations of hardness classes in relation to Vickers hardness
Hardness class
14H 22H 33H 45H
designation
Vickers hardness, HV min 140 220 330 450
The designation system of this part of ISO 898 may be used for sizes outside the limits laid down in this clause
(e.g. d > 30 mm), provided all applicable mechanical and physical requirements in accordance with Tables 2
and 3 are met.
6 Materials
Table 2 specifies limits for the chemical composition of steels for the different hardness classes of fasteners.
The chemical composition shall be assessed in accordance with the relevant International Standards.
NOTE National regulations imposing a restriction or prohibition on certain chemical elements can apply; they are
expected to be taken into account in the countries or regions concerned.
© ISO 2012 – All rights reserved 3

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SIST EN ISO 898-5:2012
ISO 898-5:2012(E)
Table 2 — Steel specifications
a
Hardness class Material Heat treatment Chemical composition limit
b
(cast analysis, %)
C P S
max. min. max. max.
c
14H Carbon st
...