Hexagon high nuts (style 2), with fine pitch thread - Product grades A and B (ISO/DIS 8674:2016)

2017-11-17: Project cancelled in ISO/CS (see dataservice on 2017-11-16).

Hohe Sechskantmuttern (Typ 2) mit Feingewinde - Produktklassen A und B (ISO/DIS 8674:2016)

Diese Internationale Norm legt Eigenschaften von Sechskantmuttern (Typ 2) mit Feingewinde mit Nenndurchmessern von 8 mm bis 39 mm fest. Für die Gewindenenndurchmesser D ≤ 16 mm gilt Produktklasse A und für die Gewindenenndurchmesser D > 16 mm Produktklasse B.

Écrous hexagonaux hauts (style 2), à pas fin - Grades A et B (ISO/DIS 8674:2016)

Šestrobe visoke matice (tip 2) z drobnim metrskim navojem - Razreda izdelave A in B (ISO/DIS 8674:2016)

General Information

Status
Not Published
Public Enquiry End Date
26-Jun-2016
Technical Committee
ISEL - Mechanical elements
Current Stage
98 - Abandoned project (Adopted Project)
Start Date
15-Jan-2020
Due Date
20-Jan-2020
Completion Date
15-Jan-2020

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oSIST prEN ISO 8674:2016

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Effective Date
18-Jan-2023
Effective Date
01-Jun-2016

Overview

oSIST prEN ISO 8674:2016 covers the international standardization of hexagon high nuts (style 2) with fine pitch threads, classified according to product grades A and B. This draft standard was developed under the Vienna Agreement to harmonize ISO and European standards for metric fasteners. It applies to high nuts with nominal thread diameters from 8 mm to 39 mm, specifying preferred and non-preferred fine thread sizes, dimensional requirements, and material properties. Adherence to this standard ensures interchangeability, mechanical reliability, and global compatibility for hexagon high nuts used in a wide range of applications.

Key Features:

  • Specifies dimensions and mechanical requirements for steel and stainless steel hexagon high nuts
  • Addresses grades A (for diameters ≤16 mm) and B (for diameters >16 mm)
  • Covers fine pitch metric threads per ISO standards
  • Incorporates surface finish, coating, and inspection guidelines

Key Topics

  • Dimensional Requirements: The standard defines precise measurements for hexagon high nuts, including width across flats, diameter, thread pitch, and maximum/minimum values for both preferred and non-preferred threads.
  • Product Grades:
    • Grade A: For nuts with nominal diameters up to and including 16 mm, requiring higher precision.
    • Grade B: For larger nuts (over 16 mm), allowing slightly broader tolerances.
  • Thread Specifications: Fine pitch threads are standardized according to ISO 262 and ISO 724, improving load distribution and vibration resistance.
  • Material & Mechanical Properties:
    • Steel: Conforming to ISO 898-2 for property classes 8, 10, and 12, with options for quenching and tempering depending on diameter and grade.
    • Stainless Steel: Complying with ISO 3506-2, including property classes such as A2-70, A4-70, and A4-80.
  • Surface Finish & Coatings: Requirements for electroplated and non-electrolytically applied coatings (ISO 4042, ISO 10683), stainless steel passivation (ISO 16048), and limits for surface discontinuities (ISO 6157-2).
  • Quality & Inspection: Conformance with general requirements (ISO 8992) and acceptance procedures (ISO 3269).
  • Designation: A clear system for identifying hexagon high nuts as per ISO 8674, using nomenclature that includes size, pitch, and property class.

Applications

Hexagon high nuts specified in oSIST prEN ISO 8674:2016 are crucial in applications requiring:

  • High-strength fastening: Found in machinery, automotive, construction, and heavy equipment where fine pitch threads provide enhanced resistance to loosening due to vibration.
  • Precision assemblies: Used in equipment demanding reliable torque and consistent clamping force.
  • Corrosive environments: Stainless steel grades are suited for chemical processing, marine, and outdoor structures.
  • Global manufacturing and supply chains: The adoption of harmonized ISO and EN standards simplifies procurement, quality control, and interoperability across international markets.

Standardized dimensions and properties enable manufacturers, designers, and engineers to specify hexagon high nuts confidently for critical joints, knowing they will fit and perform according to expectations.


Related Standards

Several international standards are referenced in oSIST prEN ISO 8674:2016 to ensure consistency and compatibility throughout the fastener industry:

  • ISO 225: Fasteners - Symbols and descriptions of dimensions
  • ISO 262 & ISO 724: Metric screw threads - Selected sizes and basic dimensions
  • ISO 965-2: Screw threads - Tolerances
  • ISO 898-2: Mechanical properties of steel fasteners - Nuts with specified property classes
  • ISO 3506-2: Mechanical properties of corrosion-resistant stainless steel fasteners
  • ISO 4759-1: Tolerances for fasteners
  • ISO 4042 & ISO 10683: Fastener coatings
  • ISO 16048: Passivation of stainless steel fasteners
  • ISO 8992: General fastener requirements
  • ISO 3269: Acceptance inspection for fasteners
  • ISO 6157-2: Surface discontinuities - Nuts
  • ISO/TR 16224: Technical aspects of nut design

Adopting oSIST prEN ISO 8674:2016 alongside these related ISO standards helps ensure the quality, safety, and international compatibility of metric hexagon high nuts with fine pitch thread.

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oSIST prEN ISO 8674:2016

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Frequently Asked Questions

oSIST prEN ISO 8674:2016 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Hexagon high nuts (style 2), with fine pitch thread - Product grades A and B (ISO/DIS 8674:2016)". This standard covers: 2017-11-17: Project cancelled in ISO/CS (see dataservice on 2017-11-16).

2017-11-17: Project cancelled in ISO/CS (see dataservice on 2017-11-16).

oSIST prEN ISO 8674:2016 is classified under the following ICS (International Classification for Standards) categories: 21.040.10 - Metric screw threads; 21.060.20 - Nuts. The ICS classification helps identify the subject area and facilitates finding related standards.

oSIST prEN ISO 8674:2016 has the following relationships with other standards: It is inter standard links to SIST EN ISO 8674:2014, SIST EN ISO 8674:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

oSIST prEN ISO 8674:2016 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-junij-2016
Šestrobe visoke matice (tip 2) z drobnim metrskim navojem - Razreda izdelave A in
B (ISO/DIS 8674:2016)
Hexagon high nuts (style 2), with fine pitch thread - Product grades A and B (ISO/DIS
8674:2016)
Écrous hexagonaux hauts (style 2), à pas fin - Grades A et B (ISO/DIS 8674:2016)
Ta slovenski standard je istoveten z: prEN ISO 8674
ICS:
21.040.10 Metrski navoji Metric screw threads
21.060.20 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 8674
ISO/TC 2/SC 12 Secretariat: DIN
Voting begins on: Voting terminates on:
2016-03-31 2016-06-29
Hexagon high nuts (style 2), with fine pitch thread —
Product grades A and B
Écrous hexagonaux hauts (style 2) à filetage métrique à pas fin — Grades A et B
ICS: 21.060.20
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
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.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
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 8674:2016(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 2016

ISO/DIS 8674:2016(E)
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
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ii © ISO 2016 – All rights reserved

ISO/DIS 8674:2016(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
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 fourth edition cancels and replaces the third edition (ISO 8674:2012).
This standard differs from ISO 8674:2012 as follows:
— the Scope has been updated;
— M10x1,25 and M20x2 have been moved to the preferred threads table;
— non-preferred threads have been completed;
— for steel nuts, quenching and tempering is specified in accordance with ISO 898-2 as mandatory or
optional;
— for steel nuts, the property class 8 has been extended to the whole diameter range;
— the reference to ISO/TR 16224 for nut design has been added;
— stainless steel nuts have been added.
ISO/DIS 8674:2016(E)
Hexagon high nuts (style 2), with fine pitch thread — Product
grades A and B
1 Scope
This International Standard specifies the characteristics of hexagon high nuts (style 2) with fine pitch
thread, with nominal diameter from 8 mm through 39 mm, with product grade A for nominal di
...