prEN ISO 7042

SLOVENSKI STANDARD
01-junij-2016
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Prevailing torque (all-metal) hexagon high nuts - Product grades A and B (ISO/DIS
7042:2016)
Hohe Sechskantmuttern mit Klemmteil (Ganzmetallmuttern) - Produktklassen A und B
(ISO/DIS 7042:2016)
Écrous hexagonaux hauts autofreinés (tout métal) - Grades A et B (ISO/DIS 7042:2016)
Ta slovenski standard je istoveten z: prEN ISO 7042
ICS:
21.060.20 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 7042
ISO/TC 2/SC 12 Secretariat: DIN
Voting begins on: Voting terminates on:
2016-03-31 2016-06-29
Prevailing torque (all-metal) hexagon high nuts — Product
grades A and B
Écrous hexagonaux hauts autofreinés (tout métal) — Grades A et B
ICS: 21.060.20
ISO/CEN PARALLEL PROCESSING
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as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel three month enquiry.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
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Reference number
NATIONAL REGULATIONS.
ISO/DIS 7042:2016(E)
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NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION. ISO 2016

ISO/DIS 7042:2016(E)
© ISO 2016, Published in Switzerland
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ii © ISO 2016 – All rights reserved

ISO/DIS 7042:2016(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
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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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO's adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 2, Fasteners, Subcommittee SC 12, Fasteners
with metric internal thread.
This fourth edition cancels and replaces the third edition (ISO 7042:2012) and the third edition of
ISO 7720:2012.
This standard differs from ISO 7042:2012 and ISO 7720: 2012 as follows:
— the Scope has been updated;
— the preferred and the non-preferred threads are given in two separate tables, and the threads M7,
M18, M22, M27, M33 and M39 have been added;
— as property class 9 has been deleted, nuts in accordance with ISO 7720: 2012 have been replaced
by nuts of property class 10 in accordance with this standard;
— d has been specified with two decimal place;
w, min
— the maximum height have been corrected for M12 (12,60 instead of 13,30) and M24 (24,00 instead
of 23,90);
— for steel nuts, quenching and tempering is specified in accordance with ISO 898-2 as mandatory or
optional;
— the reference to ISO/TR 16224 for nut design has been added;
— stainless steel nuts have been added;
ISO/DIS 7042:2016(E)
— "prevailing torque all metal nuts" has been replaced by the symbol "P
...