EN ISO 4016:2022

Fasteners - Hexagon head bolts - Product grade C (ISO 4016:2022)

This document specifies the characteristics of hexagon head bolts, in steel, with metric coarse pitch threads M5 to M64, and with product grade C.
If in certain cases other specifications are requested, property classes can be selected from ISO 898-1 and dimensional options from ISO 888 or ISO 4753.

Verbindungselemente - Sechskantschrauben mit Schaft - Produktklasse C (ISO 4016:2022)

Dieses Dokument legt Eigenschaften von Sechskantschrauben mit Schaft aus Stahl, mit metrischen Regelgewinden von M5 bis M64 und Produktklasse C fest.
Falls in bestimmten Fällen andere Festlegungen benötigt werden, können Festigkeitsklassen aus ISO 898 1 und maßliche Alternativen aus ISO 888 oder ISO 4753 entnommen werden.

Fixations - Vis à tête hexagonale partiellement filetées - Grade C (ISO 4016:2022)

Le présent document spécifie les caractéristiques des vis à tête hexagonale partiellement filetées, en acier, à filetage métrique à pas gros M5 à M64, et de grade C.
Si dans certains cas d’autres spécifications sont requises, les classes de qualité peuvent être choisies dans l'ISO 898‑1, et les options dimensionnelles dans l'ISO 888 ou l'ISO 4753.

Vezni elementi - Vijaki s šestrobo glavo - Razred izdelave C (ISO 4016:2022)

Ta dokument določa značilnosti vijakov s šestrobo glavo iz jekla, z grobim metričnim navojem velikosti M5 do M64 in razredom izdelave C.
Če se v določenih primerih zahtevajo druge specifikacije, je razrede lastnosti mogoče izbrati po standardu ISO 898-1,
dimenzijske možnosti pa po ISO 888 ali ISO 4753.

General Information

• Status: Published
• Publication Date: 19-Jul-2022
• Withdrawal Date: 30-Jan-2023
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Drafting Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Jul-2022
• Completion Date: 20-Jul-2022
• Ref Project: SIST EN ISO 4016:2022 - Fasteners - Hexagon head bolts - Product grade C (ISO 4016:2022)

Relations

• Replaces: EN ISO 4016:2011 - Hexagon head bolts - Product grade C (ISO 4016:2011)
• Effective Date: 09-Nov-2016

Overview

EN ISO 4016:2022 - Fasteners: Hexagon head bolts, product grade C specifies the characteristics of steel hexagon‑head bolts with metric coarse pitch threads M5 to M64 in product grade C. The standard covers dimensional data, requirements, marking and labelling and references related ISO documents for mechanical properties, tolerances and coatings. EN ISO 4016:2022 is the European adoption of ISO 4016:2022 and supersedes the 2011 edition.

Key topics and technical requirements

• Scope: Steel hexagon head bolts, partially threaded, metric coarse pitch M5–M64, product grade C.
• Dimensions: Detailed dimensional requirements are given (see Clause 4) with figures and tables providing head, shank and thread geometry and standard length ranges.
• Tolerances & product grades: Tolerances and product‑grade definitions are linked to ISO 4759-1 and related fastener tolerance standards. Property classes (mechanical strength) can be selected from ISO 898‑1 when other specifications are requested.
• Marking and labelling: Clause 6 specifies marking on the product and labelling on packaging (added/updated in this edition).
• Normative references: The standard references key ISO documents used for design, inspection and finish (examples include ISO 225, ISO 888, ISO 965‑1, ISO 3269, ISO 4042, ISO 4753, ISO 4759‑1, ISO 6157‑1, ISO 8991 / 8992, ISO 10683, ISO 10684).
• Edition changes: Technical revisions in 2022 include added permissible head shapes and underhead details, restructured dimension tables, addition of M7, updates to M5 dimensional tolerance for improved bearing area, clarified rules for shortest/longest standard lengths and explicit marking/labelling rules.

Applications and users

EN ISO 4016:2022 is used by:

• Fastener manufacturers and heat‑treaters for product design, production and quality control.
• Design and mechanical engineers specifying bolts for machinery, automotive, construction and industrial equipment.
• Procurement teams and distributors ensuring interchangeability and correct product grade selection.
• Inspection and quality assurance personnel using standardized dimensions, tolerances and marking requirements for acceptance testing.

Practical benefits include consistent bolt interchangeability, clearer procurement specifications, traceable marking/labeling and alignment with mechanical property standards (ISO 898‑1) and coating standards (ISO 4042, ISO 10683, ISO 10684).

Related standards

• ISO 4016:2022 (original international text)
• ISO 898‑1 (mechanical properties / property classes)
• ISO 888, ISO 4753 (dimensional length options)
• ISO 4759‑1 (tolerances for product grades)
• ISO 4042, ISO 10683, ISO 10684 (surface coatings)

Keywords: EN ISO 4016, ISO 4016:2022, hexagon head bolts, product grade C, M5–M64, fasteners standard, bolt dimensions, marking and labelling.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN ISO 4016:2011
Vezni elementi - Vijaki s šestrobo glavo - Razred izdelave C (ISO 4016:2022)
Fasteners - Hexagon head bolts - Product grade C (ISO 4016:2022)
Sechskantschrauben mit Schaft - Produktklasse C (ISO 4016:2022)
Fixations - Vis à tête hexagonale partiellement filetées - Grade C (ISO 4016:2022)
Ta slovenski standard je istoveten z: EN ISO 4016:2022
ICS:
21.060.10 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4016
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2022
EUROPÄISCHE NORM
ICS 21.060.10 Supersedes EN ISO 4016:2011
English Version
Fasteners - Hexagon head bolts - Product grade C (ISO
4016:2022)
Fixations - Vis à tête hexagonale partiellement filetées - Sechskantschrauben mit Schaft - Produktklasse C (ISO
Grade C (ISO 4016:2022) 4016:2022)
This European Standard was approved by CEN on 25 September 2021.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4016:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 4016:2022) 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 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 January 2023, and conflicting national standards shall
be withdrawn at the latest by January 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 4016:2011.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 4016:2022 has been approved by CEN as EN ISO 4016:2022 without any modification.

INTERNATIONAL ISO
STANDARD 4016
Fifth edition
2022-06
Fasteners — Hexagon head bolts —
Product grade C
Fixations — Vis à tête hexagonale partiellement filetées — Grade C
Reference number
ISO 4016:2022(E)
ISO 4016:2022(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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 4016:2022(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 . 7
6 Marking and labelling . 7
6.1 Marking on product . . 7
6.2 Labelling on package . 7
7 Designation . 8
Bibliography . 9
iii
ISO 4016:2022(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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 11,
Fasteners with metric external thread, in collaboration with the European Committee for Standardization
(CEN) Technical Committee CEN/TC 185, Fasteners, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This fifth edition cancels and replaces the fourth edition (ISO 4016:2011), which has been technically
revised.
The main changes are as follows:
— the permissible shapes for free formed head, indentation on the head, and transition length under
head, l , have been added;
f
— tables for dimensions have been restructured;
— M7 has been added;
— d has been changed for M5 from s – IT16 to s – IT15 (as for hexagon head bolts of product
w,min min min
grades A and B) in order to have a larger bearing surface area and thus less contact pressure;
— the rules for the shortest and greatest standard lengths have been added, and they have been
amended accordingly;
— l has been corrected for M33 × 260 (169 mm instead of 167 mm);
g,max
— 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
INTERNATIONAL STANDARD ISO 4016:2022(E)
Fasteners — Hexagon head bolts — Product grade C
1 Scope
This document specifies the characteristics of hexagon head bolts, in steel, with metric coarse pitch
threads M5 to M64, and with product grade C.
If in certain cases other specifications are requested, property classes can be selected from ISO 898-1
and dimensional options from ISO 888 or ISO 4753.
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 888, Fasteners — Bolts, screws and studs — Nominal lengths and thread lengths
ISO 898-1, 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
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 4042, Fasteners — Electroplated coating systems
ISO 4753, Fasteners — Ends of parts with external ISO metric thread
ISO 4759-1, Tolerances for fasteners — Part 1: Bolts, screws, studs and nuts — Product grades A, B and C
ISO 6157-1, Fasteners — Surface discontinuities — Part 1: Bolts, screws and studs for general requirements
ISO 8991, Designation system for fasteners
ISO 8992, Fasteners — General requirements for bolts, screws, studs and nuts
ISO 10683, Fasteners — Non-electrolytically
...