ISO 10513:2012

Prevailing torque type all-metal hexagon high nuts with metric fine pitch thread - Property classes 8, 10 and 12

ISO 10513:2012 specifies the characteristics of prevailing torque type all-metal hexagon high nuts with metric fine pitch thread with nominal thread diameters, D, from 8 mm up to and including 36 mm, in product grade A for diameter sizes up to and including 16 mm and product grade B for diameter sizes above 16 mm, and with property classes 8, 10 and 12.

Écrous hexagonaux hauts autofreinés tout métal à filetage métrique à pas fin — Classes de qualité 8, 10 et 12

L'ISO 10513:2012 spécifie les caractéristiques des écrous hexagonaux hauts autofreinés tout métal à filetage métrique à pas fin, de diamètre nominal de filetage D de 8 mm à 36 mm inclus, de grade A pour les diamètres D jusqu'à 16 mm et de grade B pour les diamètres D supérieurs à 16 mm, et de classes de qualité 8, 10 et 12.

General Information

• Status: Published
• Publication Date: 13-Dec-2012
• ICS: 21.060.20 - Nuts
• Technical Committee: ISO/TC 2/SC 12 - Fasteners with metric internal thread
• Drafting Committee: ISO/TC 2/SC 12 - Fasteners with metric internal thread
• Current Stage: 9599 - Withdrawal of International Standard
• Start Date: 13-Jun-2025
• Completion Date: 13-Dec-2025

Relations

• Consolidates: ISO 16881-1:2005 - Cranes - Design calculation for rail wheels and associated trolley track supporting structure - Part 1: General
• Effective Date: 06-Jun-2022
• Revised: ISO 10513:2025 - Fasteners - Prevailing torque hexagon nuts - High nuts (all metal), with fine pitch thread
• Effective Date: 12-Nov-2022
• Revises: ISO 10513:1997 - Prevailing torque type all-metal hexagon nuts, style 2, with metric fine pitch thread - Property classes 8, 10 and 12
• Effective Date: 19-Jan-2012

Overview

ISO 10513:2012 is an international standard published by the International Organization for Standardization (ISO). It defines the specifications for prevailing torque type all-metal hexagon high nuts with metric fine pitch threads. This standard applies to nuts with nominal thread diameters (D) ranging from 8 mm to 36 mm inclusive, covering product grades A (for diameters up to 16 mm) and B (for diameters greater than 16 mm). The nuts are classified under property classes 8, 10, and 12 based on their mechanical performance.

This revision, issued in 2012, replaces the first edition from 1997 with minor revisions. ISO 10513:2012 ensures uniformity in dimensions, mechanical properties, and tolerances, contributing to reliable fastening solutions in various industrial applications.

Key Topics

Dimensions and Threading

• Metric fine pitch thread sizes from M8 to M36 are specified with detailed dimensions, including nut height, width, and thread pitch.
• Thread tolerance class 6H is mandated to ensure consistency in fit and function.

Property Classes

• Property classes 8, 10, and 12 define the mechanical strength categories for the nuts.
• Classes 8 and 10 cover a broader diameter range, while class 12 is not specified for diameters greater than 16 mm.

Grades and Tolerances

• Product grade A applies to nuts with nominal diameters up to 16 mm.
• Product grade B applies to nuts with diameters exceeding 16 mm.
• Tolerances conform to internationally recognized metrics ensuring interchangeability.

Performance Requirements

• The nuts exhibit prevailing torque locking capability by means of an all-metal design, eliminating the need for additional locking elements.
• Surface integrity and acceptance inspection follow stringent criteria to assure quality and durability.
• Specified materials are high-strength steel meeting ISO 898-2 mechanical performance standards.

Referenced Standards

• ISO 261, ISO 724, ISO 965-2 govern threading and dimensional requirements.
• ISO 898-2 and ISO 2320 outline mechanical properties and locking performance.
• ISO 4042 and ISO 10683 address coatings, including electrolytic and zinc flake finishes.
• ISO 6157-2 and ISO 3269 prescribe surface quality limits and acceptance testing procedures.

Applications

ISO 10513:2012 nuts are critical components in the assembly of machinery and structural applications where secure fastening with fine pitch threads is necessary. Typical uses include:

• Automotive manufacturing where vibration resistance and high mechanical performance are required.
• Aerospace and precision engineering sectors demanding reliable locking fasteners under severe service conditions.
• Heavy machinery and construction equipment applying high-strength all-metal nuts for durability.
• Industrial fastening systems needing standardized nuts to ensure compatibility with fine pitch metric bolts.

The prevailing torque feature of these nuts provides a reusable, metal-to-metal locking mechanism, ideal for maintenance scenarios where repeated assembly and disassembly occur.

Related Standards

For comprehensive fastener specification and selection, ISO 10513:2012 is closely related to the following standards:

• ISO 8674: Hexagon high nuts with metric fine pitch threads, grades A and B dimensions reference.
• ISO 898-2: Details mechanical properties of nuts made from carbon and alloy steel.
• ISO 2320: Performance characteristics of prevailing torque steel nuts.
• ISO 4759-1: Tolerance grades for screws, studs, and nuts including grades A, B, and C.
• ISO 4042 and ISO 10683: Specifications for fastener coatings (electrolytic and non-electrolytic zinc).
• ISO 3269: Acceptance inspection for fasteners.
• ISO 6157-2: Surface defect limits for nuts.

Adhering to this integrated suite of ISO standards ensures the selection of appropriate fasteners that meet stringent quality, performance, and safety demands globally.

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ISO 10513:2012 helps manufacturers, engineers, and quality control professionals reliably identify and utilize prevailing torque all-metal hexagon high nuts with fine metric threads, enhancing fastening security in diverse industrial applications. Keywords: ISO 10513, prevailing torque nuts, metric fine pitch thread, hexagon high nuts, property classes 8 10 12, ISO fastener standards, all-metal nuts.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 10513
Second edition
2012-12-15
Prevailing torque type all-metal hexagon
high nuts with metric fine pitch thread —
Property classes 8, 10 and 12
Écrous hexagonaux hauts autofreinés tout métal à filetage métrique à
pas fin — Classes de qualité 8, 10 et 12
Reference number
©
ISO 2012
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 [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Dimensions . 2
4 Requirements and reference International Standards . 3
5 Designation . 3
Bibliography . 4
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 10513 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 12, Fasteners with
metric internal thread.
This second edition cancels and replaces the first edition (ISO 10513:1997), of which it constitutes a minor revision.
iv © ISO 2012 – All rights reserved

INTERNATIONAL STANDARD ISO 10513:2012(E)
Prevailing torque type all-metal hexagon high nuts with metric
fine pitch thread — Property classes 8, 10 and 12
1 Scope
This International Standard specifies the characteristics of prevailing torque type all-metal hexagon high nuts
with metric fine pitch thread, with nominal thread diameters, D, from 8 mm up to and including 36 mm, in
product grade A for sizes D up to and including 16 mm and product grade B for sizes D above 16 mm, and with
property classes 8, 10 and 12.
NOTE Th
...

NORME ISO
INTERNATIONALE 10513
Deuxième édition
2012-12-15
Écrous hexagonaux hauts autofreinés
tout métal à filetage métrique à pas fin —
Classes de qualité 8, 10 et 12
Prevailing torque type all-metal hexagon high nuts with metric fine pitch
thread — Property classes 8, 10 and 12
Numéro de référence
©
ISO 2012
DOCUMENT PROTÉGÉ PAR COPYRIGHT
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 [e-mail]
Web www.iso.org
Publié en Suisse
ii © ISO 2012 – Tous droits réservés

Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Dimensions . 2
4 Exigences et Normes internationales de référence . 3
5 Désignation . 3
Bibliographie . 4
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 10513 a été élaborée par le comité technique ISO/TC 2, Éléments de fixation, sous-comité SC 12,
Éléments de fixation à filetage métrique intérieur.
Cette deuxième édition annule et remplace la première édition (ISO 10513:1997), dont elle constitue une
révision mineure.
iv © ISO 2012 – Tous droits réservés

NORME INTERNATIONALE ISO 10513:2012(F)
Écrous hexagonaux hauts autofreinés tout métal à filetage
métrique à pas fin — Classes de qualité 8, 10 et 12
1 Domaine d’application
La présente Norme internationale spécifie les caractéristiques des écrous hexagonaux hauts autofreinés tout
métal à filetage métrique à pas fin, de diamètre nominal de filetage D de 8 mm à 36 mm inclus, de grade A
pour les diamètres D jusqu’à 16 mm et de grade B pour les diamètres D supérieurs à 16 mm, et de classes de
qualité 8, 10 et 12.
NOTE Les dimensions des écrous, à l’exception des dimensions m et h , correspondent à celles données
...