prEN ISO 4032
(Main)Hexagon regular nuts (style 1) - Product grades A and B (ISO/DIS 4032:2016)
Hexagon regular nuts (style 1) - Product grades A and B (ISO/DIS 4032:2016)
Sechskantmuttern (Typ 1) - Produktklassen A und B (ISO/DIS 4032:2016)
Écrous hexagonaux normaux (style 1) - Grades A et B (ISO/DIS 4032:2016)
Vezni elementi - Šestrobe matice (tip 1) (ISO/DIS 4032:2022)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2022
Vezni elementi - Šestrobe matice (tip 1) (ISO/DIS 4032:2022)
Fasteners - Hexagon regular nuts (style 1) (ISO/DIS 4032:2022)
Mechanische Verbindungselemente – Sechskantmuttern (Typ 1) (ISO/DIS 4032:2022)
Fixations - Écrous hexagonaux normaux (style 1) (ISO/DIS 4032:2022)
Ta slovenski standard je istoveten z: prEN ISO 4032
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 4032
ISO/TC 2/SC 12 Secretariat: DIN
Voting begins on: Voting terminates on:
2022-04-20 2022-07-13
Fasteners — Hexagon regular nuts (style 1)
Fixations — Écrous hexagonaux normaux (style 1)
ICS: 21.060.20
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 4032:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022
ISO/DIS 4032:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
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Published in Switzerland
ii
ISO/DIS 4032:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions .2
5 Requirements and reference International Standards . 3
6 Marking and labelling . 5
6.1 Marking on product . . 5
6.2 Labelling on package . 5
7 Designation . 5
Annex A (informative) Nuts with D < M5 and D > M39, not conforming to ISO 898-2 .6
Bibliography . 9
iii
ISO/DIS 4032:2022(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.
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 fifth edition cancels and replaces the fourth edition (ISO 4032:2012).
The main changes compared to the previous edition are as follows:
— nuts with D < M5 and D > M39 (with m < 0,8D not conforming to ISO 898-2) have been shifted to
min
informative Annex A; reference to ISO/TR 16224 for appropriate nut design has been added;
— M7 has been added;
— values of c for sizes M1,6 to M2,5 have been amended in accordance with ISO 4759-1;
max
— d , d and m have been specified with two decimal places;
a,max w,min w,min
— d for sizes D ≤ M5 has been changed from s – IT16 to s – IT15 in order to have a larger
w,min min min
bearing surface area and thus less contact pressure;
— for steel nuts, quenching and tempering condition has been specified in accordance with ISO 898-2,
and property classes 5 and 12 have been added;
— for stainless steel nuts, grades D4 and D6 and property class 80 have been added;
— non-ferrous metal nuts have been cancelled (as a consequence of the cancellation of ISO 8839);
— specifications for marking and labelling have been added as Clause 6.
Any feedback or questions on this document should be directed to the user's national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
DRAFT INTERNATIONAL STANDARD ISO/DIS 4032:2022(E)
Fasteners — Hexagon regular nuts (style 1)
1 Scope
This document specifies the characteristics of hexagon regular nuts (style 1), in steel and stainless
steel, with metric coarse pitch thread M5 to M39, and with product grades A and B.
NOTE For nuts with sizes D < M5 and D > M39, see Annex A (informative).
If in certain cases other specifications are requested, property classes and stainless steel grades can be
selected from ISO 898-2 or ISO 3506-2.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 898-2, Fasteners — Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2:
Nuts with specified property classes
ISO 965-1, ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data
ISO 1891-4, Fasteners — Vocabulary — Part 4: Control, inspection, delivery, acceptance and quality
ISO 3269, Fasteners — Acceptance inspection
ISO 3506-2, Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part 2:
Nuts with specified grades and property classes
ISO 4042, Fasteners — Electroplated coating systems
ISO 4759-1, Tolerances for fasteners — Part 1: Bolts, screws, studs and nuts — Product grades A, B and C
ISO 6157-2, Fasteners — Surface discontinuities — Part 2: Nuts
ISO 8991, Designation system for fasteners
ISO 8992, Fasteners — General requirements for bolts, screws, studs and nuts
ISO 10683, Fasteners — Non-electrolytically applied zinc flake coating systems
ISO 10684, Fasteners — Hot dip galvanized coatings
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
ISO/DIS 4032:2022(E)
4 Dimensions
Dimensions for nuts M5 to M39 shall be in accordance with Figures 1 and 2, and with Tables 1 and 2.
Unless otherwise specified at the time of the order, the nuts are delivered without washer-face.
NOTE For nuts with sizes D < M5 and D > M39, see Annex A.
Symbols and descriptions of dimensions are defined in ISO 225.
Figure 1 — Nut without washer-face
Dimensions in millimetres
a
Reference datum for d .
w
Figure 2 — Nut with optional washer-face
ISO/DIS 4032:2022(E)
Table 1 — Dimensions for nuts M5 to M18
Dimensions in millimetres
Thread, D M5 M6 (M7) M8 M10 M12 (M14) M16 (M18)
a
P 0,8 1 1 1,25 1,5 1,75 2 2 2,5
max. 0,50 0,50 0,60 0,60 0,60 0,60 0,60 0,80 0,80
b
c
min. 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,20 0,20
max. 5,75 6,75 7,75 8,75 10,80 12,96 15,12 17,28 19,44
d
a
min. 5,00 6,00 7,00 8,00 10,00 12,00 14,00 16,00 18,00
d min. 7,20 8,88 9,63 11,63 14,63 16,63 19,64 22,49 24,85
w
e min. 8,79 11,05 12,12 14,38 17,77 20,03 23,36 26,75 29,56
max. 4,70 5,20 6,50 6,80 8,40 10,80 12,80 14,80 15,80
m
min. 4,40 4,90 6,14 6,44 8,04 10,37 12,10 14,10 15,10
m min. 3,52 3,92 4,91 5,15 6,43 8,30 9,68 11,28 12,08
w
nom. = max. 8,00 10,00 11,00 13,00 16,00 18,00 21,00 24,00 27,00
s
min. 7,78 9,78 10,73 12,73 15,73 17,73 20,67 23,67 26,16
NOTE Sizes shown in brackets are non-preferred dimensions.
a
P is the pitch of the thread.
b
c only applies if a washer-face is present.
Table 2 — Dimensions for nuts M20 to M39
Dimensions in millimetres
Thread, D M20 (M22) M24 (M27) M30 (M33) M36 (M39)
a
P 2,5 2,5 3 3 3,5 3,5 4 4
max. 0,80 0,80 0,80 0,80 0,80 0,80 0,80 1,00
b
c
min. 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,30
max. 21,60 23,76 25,92 29,16 32,40 35,64 38,88 42,12
d
a
min. 20,00 22,00 24,00 27,00 30,00 33,00 36,00 39,00
d min. 27,70 31,35 33,25 38,00 42,75 46,55 51,11 55,86
w
e min. 32,95 37,29 39,55 45,20 50,85 55,37 60,79 66,44
max. 18,00 19,40 21,50 23,80 25,60 28,70 31,00 33,40
m
min. 16,90 18,10 20,20 22,50 24,30 27,40 29,40 31,80
m min. 13,52 14,48 16,16 18,00 19,44 21,92 23,52 25,44
w
nom. = max. 30,00 34,00 36,00 41,00 46,00 50,00 55,00 60,00
s
min. 29,16 33,00 35,00 40,00 45,00 49,00 53,80 58,80
NOTE Sizes shown in brackets are non-preferred dimensions.
a
P is the pitch of the thread.
b
c only applies if a washer-face is present.
5 Requirements and reference International Standards
The requirements specified in the International Standards referenced in Table 3 shall apply for nuts M5
to M39 only.
NOTE For nuts with D < M5 and D > M39, see Annex A.
ISO/DIS 4032:2022(E)
Table 3 — Requirements and reference International Standards
Material Steel Stainless steel
General International
ISO 8992
requirements Standard
a
Tolerance class 6H
Thread
International
ISO 965-1
Standard
Style 1
b b c
5 , 6 , 8 ,
M5 ≤ D ≤ M16
d d
10 , 12
Property class
—
and symbol b b d
5 , 6 , 8 ,
M16 < D ≤ M39
d
Mechanical
A2-70, A4-70, A4-
M5 ≤ d ≤ M24
properties
e 80, D4-80, D6-80
Grade and
property class —
A2-50, A2-70, A4-
and symbol
M24 < d ≤ M39 50, A4-70, D4-70,
D6-70
International
ISO 898-2 ISO 3506-2
Standard
Product grade D ≤ M16: A (except for M5 where d = s – IT15) D > M16: B
w,min min
Tolerances
International
ISO 4759-1
Standard
As processed (no coating)
Electroplated coatings as
specified in ISO 4042
Clean and bright
Non-electrolytically applied zinc
and/or
flake coatings as specified in
Finish – Coating
f
Passivated
ISO 10683
Hot dip galvanized coatings as
specified in ISO 10684
Other finishes, coatings and/or additional requirements
shall be agreed between the purchaser and the supplier
Limits for surface discontinuities
g
Surface integrity As agreed
as specified in ISO 6157-2
Acceptability Acceptance inspection as specified in ISO 3269
a
Dep
...
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