Countersunk flat head screws (common head style) with type H or type Z cross recess - Product grade A - Part 1: Steel screws of property class 4.8

ISO 7046-1:2011 specifies the characteristics of countersunk flat head screws with threads from M1,6 to M10 inclusive, of product grade A and property class 4.8, and with type H or type Z cross recess.

Vis à métaux à tête fraisée à empreinte cruciforme de type H ou de type Z — Grade A — Partie 1: Vis en acier de classe de qualité 4.8

L'ISO 7046-1:2011 spécifie les caractéristiques des vis à métaux à tête fraisée à empreinte cruciforme de type H ou de type Z, de diamètre de filetage M1,6 à M10 inclus, de grade A et de classe de qualité 4.8.

General Information

Status
Published
Publication Date
25-Aug-2011
Current Stage
9093 - International Standard confirmed
Start Date
29-Jun-2021
Completion Date
13-Dec-2025

Relations

Effective Date
18-Sep-2010

Overview

ISO 7046-1:2011 is an international standard that defines the specifications for countersunk flat head screws with type H or type Z cross recesses. These screws are steel fasteners of property class 4.8, manufactured to product grade A. The standard applies to screws with metric threads ranging from M1.6 to M10 inclusive. It ensures uniformity in dimensions, mechanical properties, thread tolerances, surface integrity, and finish, facilitating global compatibility and quality assurance in fastener applications.

This standard is essential for manufacturers, suppliers, and users of fasteners requiring reliable, standardized steel screws with countersunk flat heads for applications where precise seating and aesthetic flush surfaces are important.

Key Topics

  • Scope and Application
    ISO 7046-1:2011 covers countersunk flat head steel screws with metric threads M1.6–M10, providing a common technical language for specifying these fasteners with cross recess types H or Z.

  • Dimensions and Tolerances
    Detailed dimensions including head diameter, thickness, thread pitch, and recess sizes are specified according to ISO 225 and related standards. The standard includes tables outlining parameters such as maximum and minimum dimensions for various thread sizes, ensuring manufacturing precision.

  • Material and Mechanical Properties
    The screws must meet property class 4.8, defined by ISO 898-1, ensuring adequate strength and durability for general-purpose applications. Steel material and surface treatments adhere to ISO 4042 guidelines with additional options negotiable between supplier and purchaser.

  • Cross Recess Types
    Type H and type Z cross recesses, defined by ISO 4757, offer enhanced torque transmission and drive accessibility. The standard specifies penetration depths and dimensions to maintain consistent compatibility with screwdrivers and power tools.

  • Surface Integrity and Acceptance
    Surface quality is controlled under ISO 6157-1 for discontinuities and ISO 3269 for acceptance inspection, maintaining strict quality control in production.

  • Designation and Identification
    Screws are identified using a structured format including thread size, length, property class, and recess type (e.g., ISO 7046-1 - M5 × 20 - 4.8 - Z), facilitating easy specification and procurement.

Applications

Countersunk flat head screws specified by ISO 7046-1:2011 are widely used in:

  • Mechanical Engineering and Assembly
    For components requiring flush mounting to avoid protruding heads, especially in precision machinery and instruments.

  • Electrical and Electronics
    Where neat surfaces and secure fastening with cross recess screws support assembly of enclosures, panels, and devices.

  • Automotive and Transportation
    Providing reliable fastenings in interior panels, trim, and other parts requiring aesthetic integration and secure seating.

  • General Manufacturing and Construction
    For fastening in metal, plastic, and composite materials where uniform mechanical properties and dimensional standards enable interchangeability and quality assurance.

Related Standards

ISO 7046-1 references and aligns with multiple international standards to ensure comprehensive specifications and global compliance:

  • ISO 225 – Symbols and description of screw dimensions
  • ISO 261 & ISO 965-2 – General purpose metric screw threads and thread tolerances
  • ISO 898-1 – Mechanical properties of carbon steel and alloy steel fasteners
  • ISO 4757 – Specifications for cross recess types H and Z
  • ISO 4759-1 – Tolerances for fasteners product grades A, B, and C
  • ISO 6157-1 – Surface discontinuities requirements
  • ISO 3269 – Acceptance inspection of fasteners
  • ISO 4042 – Electroplated coatings for fasteners
  • ISO 7721 & ISO 7721-2 – Head configuration and penetration depth of cross recesses

These related standards ensure that ISO 7046-1 screws meet consistent quality, manufacturing precision, and functional performance tailored for global markets and engineering demands.


By adhering to ISO 7046-1:2011, manufacturers and users guarantee high-quality countersunk flat head screws with reliable mechanical properties and dimensional accuracy, critical for secure assemblies in various industrial and commercial sectors. This standard supports efficient procurement, compliance, and interoperability in fastener applications worldwide.

Standard

ISO 7046-1:2011 - Countersunk flat head screws (common head style) with type H or type Z cross recess -- Product grade A

English language
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Standard

ISO 7046-1:2011 - Vis a métaux a tete fraisée a empreinte cruciforme de type H ou de type Z -- Grade A

French language
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Frequently Asked Questions

ISO 7046-1:2011 is a standard published by the International Organization for Standardization (ISO). Its full title is "Countersunk flat head screws (common head style) with type H or type Z cross recess - Product grade A - Part 1: Steel screws of property class 4.8". This standard covers: ISO 7046-1:2011 specifies the characteristics of countersunk flat head screws with threads from M1,6 to M10 inclusive, of product grade A and property class 4.8, and with type H or type Z cross recess.

ISO 7046-1:2011 specifies the characteristics of countersunk flat head screws with threads from M1,6 to M10 inclusive, of product grade A and property class 4.8, and with type H or type Z cross recess.

ISO 7046-1:2011 is classified under the following ICS (International Classification for Standards) categories: 21.060.10 - Bolts, screws, studs. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 7046-1:2011 has the following relationships with other standards: It is inter standard links to ISO 7046-1:1994. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase ISO 7046-1:2011 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.

Standards Content (Sample)


INTERNATIONAL ISO
STANDARD 7046-1
Second edition
2011-09-01
Countersunk flat head screws (common
head style) with type H or type Z cross
recess — Product grade A —
Part 1:
Steel screws of property class 4.8
Vis à métaux à tête fraisée à empreinte cruciforme de type H ou de
type Z — Grade A —
Partie 1: Vis en acier de classe de qualité 4.8

Reference number
©
ISO 2011
©  ISO 2011
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 copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved

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 7046-1 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 11, Fasteners
with metric external thread.
This second edition cancels and replaces the first edition (ISO 7046-1:1994), of which it constitutes a minor
revision.
ISO 7046 consists of the following parts, under the general title Countersunk flat head screws (common head
style) with type H or type Z cross recess — Product grade A:
⎯ Part 1: Steel screws of property class 4.8
⎯ Part 2: Steel screws of property class 8.8, stainless steel screws and non-ferrous metal screws

INTERNATIONAL STANDARD ISO 7046-1:2011(E)

Countersunk flat head screws (common head style) with type H
or type Z cross recess — Product grade A —
Part 1:
Steel screws of property class 4.8
1 Scope
This part of ISO 7046 specifies the characteristics of countersunk flat head screws with threads from M1,6 to
M10 inclusive, of product grade A and property class 4.8, and with type H or type Z cross recess.
If, in special cases, specifications other than those listed in this part of ISO 7046 are required, they can be
selected from existing International Standards, for example ISO 261, ISO 888, ISO 898-1 and ISO 965-2.
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 261, ISO general purpose metric screw threads — General plan
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 965-2, ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general
purpose external and internal screw threads — Medium quality
ISO 3269, Fasteners — Acceptance inspection
ISO 4042, Fasteners — Electroplated coatings
ISO 4757, Cross recesses for screws
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 8992, Fasteners — General requirements for bolts, screws, studs and nuts
© ISO
...


NORME ISO
INTERNATIONALE 7046-1
Deuxième édition
2011-09-01
Vis à métaux à tête fraisée à empreinte
cruciforme de type H ou de type Z —
Grade A —
Partie 1:
Vis en acier de classe de qualité 4.8
Countersunk flat head screws (common head style) with type H or
type Z cross recess — Product grade A —
Part 1: Steel screws of property class 4.8

Numéro de référence
©
ISO 2011
DOCUMENT PROTÉGÉ PAR COPYRIGHT

©  ISO 2011
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publication ne peut être reproduite ni utilisée sous
quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit
de l'ISO à l'adresse ci-après ou du comité membre de l'ISO dans le pays du demandeur.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Publié en Suisse
ii © ISO 2011 – Tous droits réservés

Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de
normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiée
aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du
comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI,
Partie 2.
La tâche principale des comités techniques est d'élaborer les Normes internationales. Les projets de Normes
internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur
publication comme Normes internationales requiert l'approbation de 75 % au moins des comités membres
votants.
L'attention est appelée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable de ne
pas avoir identifié de tels droits de propriété et averti de leur existence.
L'ISO 7046-1 a été élaborée par le comité technique ISO/TC 2, Éléments de fixation, sous-comité SC 11,
Éléments de fixation à filetage métrique extérieur.
Cette deuxième édition annule et remplace la première édition (ISO 7046-1:1994), qui a fait l'objet d'une
révision mineure.
L'ISO 7046 comprend les parties suivantes, présentées sous le titre général Vis à métaux à tête fraisée à
empreinte cruciforme de type H ou de type Z — Grade A:
⎯ Partie 1: Vis en acier de classe de qualité 4.8
⎯ Partie 2: Vis en acier de classe de qualité 8.8, vis en acier inoxydable et vis en métaux non ferreux

NORME INTERNATIONALE ISO 7046-1:2011(F)

Vis à métaux à tête fraisée à empreinte cruciforme de type H ou
de type Z — Grade A —
Partie 1:
Vis en acier de classe de qualité 4.8
1 Domaine d'application
La présente partie de l'ISO 7046 spécifie les caractéristiques des vis à métaux à tête fraisée à empreinte
cruciforme de type H ou de type Z, de diamètres de filetage M1,6 à M10 inclus, de grade A et de classe de
qualité 4.8.
Si, dans des cas particuliers, des spécifications autres que celles figurant dans la présente partie de
l'ISO 7046 sont requises, elles peuvent être choisies dans les Normes internationales existantes, par exemple
l'ISO 261, l'ISO 888, l'ISO 898-1 et l'ISO 965-2.
2 Références normatives
Les documents de référence suivants sont indispensables pour l'application du présent document. Pour les
références datées, seule l'édition citée s'applique. Pour les références non datées, la dernière édition du
document de référence s'applique (y compris les éventuels amendements).
ISO 225, Éléments de fixation — Vis, goujons et écrous — Symboles et description des dimensions
ISO 261, Filetages métriques ISO pour usages généraux — Vue d'ensemble
ISO 898-1, Caractéristiques mécaniques des éléments de fixation en acier au carbone et en acier allié —
Partie 1: Vis, goujons et tiges filetées de classe de qualité spécifiées — Filetages à pas gros et filetages à pas
fin
ISO 965-2, Filetages métriques ISO pour usages généraux — Tolérances — Partie 2: Dimensions limites pour
filetages intérieurs et extérieurs d'usages généraux — Qualité moyenne
ISO 3269, Éléments de fixation — Contrôle de réception
ISO 4042, Éléments de fixation — Revêtements électrolytiques
ISO 4757, Empreintes cruciformes pour vis
ISO 4759-1, Tolérances des éléments de fixation — Partie 1: Vis, goujons et écrous — Grades A, B et C
ISO 6157-1, Éléments de fixation — Défauts de surface — Partie 1: Vis et goujons d'usage général
ISO 8992, Éléments de fixation — Exigences générales pour vis, goujons et écrous
...

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