ISO 8751:2007
(Main)Spring-type straight pins - Coiled, light duty
Spring-type straight pins - Coiled, light duty
ISO 8751:2007 specifies the characteristics of coiled, light duty spring-type straight pins made of steel or of austenitic or martensitic stainless steel, with a nominal diameter of from 1,5 mm to 8 mm inclusive.
Goupilles élastiques spiralées — Série mince
L'ISO 8751:2007 spécifie les caractéristiques des goupilles élastiques spiralées, série mince, en acier ou en acier inoxydable austénitique ou martensitique, de diamètre nominal compris entre 1,5 mm et 8 mm inclus.
General Information
- Status
- Published
- Publication Date
- 18-Apr-2007
- Technical Committee
- ISO/TC 2 - Fasteners
- Drafting Committee
- ISO/TC 2/WG 13 - Washer and non-threaded fasteners
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 19-Aug-2025
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 15-Apr-2008
Overview
ISO 8751:2007 defines the international standard for spring-type straight pins - coiled, light duty. These pins are made from steel or stainless steel (austenitic or martensitic) with nominal diameters ranging from 1.5 mm to 8 mm. This standard specifies the technical characteristics, material compositions, dimensions, mechanical properties, and quality requirements for these pins to ensure uniformity, reliability, and compatibility in various engineering applications.
Produced and maintained by the International Organization for Standardization (ISO), this third edition replaces the previous 1997 version, incorporating updated requirements and improved guidelines. The document is essential for manufacturers, suppliers, and engineers working with fasteners, guaranteeing consistent performance and interchangeability of coiled spring pins globally.
Key Topics
Dimensions and Tolerances:
ISO 8751:2007 details precise diameter sizes and lengths, along with tolerances in accordance with related ISO standards such as ISO 286-2 for limits and fits. Nominal diameters cover sizes from 1.5 to 8 mm, with commercially available lengths ranging from 4 mm to 120 mm and longer.Material Specifications:
Pins are manufactured from:- Steel
- Austenitic stainless steel
- Martensitic stainless steel
Each material type has defined chemical composition limits and hardness levels to ensure mechanical performance. For example, hardness testing follows ISO 6507-1 Vickers hardness test standards.
Mechanical Properties: The standard specifies minimum shear strength values to meet the functional requirements of light-duty spring pins. Testing methods are referenced according to ISO 8749.
Surface Finish and Coating: Pins are usually supplied in plain finish with protective lubrication. Surface treatments must avoid hydrogen embrittlement risks. If electroplating or phosphate-coating is necessary for corrosion resistance, post-plating baking is mandatory following ISO 4042 guidelines.
Quality and Inspection: All pins must be free from defects, burrs, or irregularities. Acceptance inspection adheres to ISO 3269 to confirm compliance.
Designation and Marking: The document provides clear instructions on how to designate pins, including nominal diameter, length, and material type (e.g., Steel - St, Austenitic - A), facilitating straightforward identification and ordering.
Applications
ISO 8751:2007 standardized coiled light duty spring pins are widely used in industries requiring reliable fastening solutions that absorb shock, vibration, and accommodate slight misalignments. Common applications include:
- Assembly of mechanical components in automotive, aerospace, and machinery sectors
- Electrical and electronics manufacturing where secure, non-permanent fastening is needed
- Precision engineering for alignment and positioning in tool and die making
- Maintenance and repair operations requiring consistent and interchangeable fastener parts
Their use enhances product longevity, improves assembly efficiency, and supports high-quality manufacturing standards.
Related Standards
ISO 8751:2007 complements and relates closely to these standards, which cover other categories of spring-type pins and fastener components:
- ISO 8748 - Spring-type straight pins - Coiled, heavy duty
- ISO 8750 - Spring-type straight pins - Coiled, standard duty
- ISO 286-2 - ISO system of limits and fits - Standard tolerance grades for holes and shafts
- ISO 6507-1 - Metallic materials - Vickers hardness test methods
- ISO 4042 - Fasteners - Electroplated coatings and hydrogen embrittlement relief
- ISO 8749 - Pins and grooved pins - Shear testing
- ISO 3269 - Fasteners - Acceptance inspection procedures
Compliance with ISO 8751:2007 ensures that spring pins meet global benchmarks for performance and quality, facilitating international trade and engineering precision.
Keywords: ISO 8751, spring-type straight pins, coiled pins, light duty spring pins, steel spring pins, stainless steel pins, fastener standards, pin dimensions, shear strength, Vickers hardness, ISO fasteners, industrial pins, spring pins specification.
Frequently Asked Questions
ISO 8751:2007 is a standard published by the International Organization for Standardization (ISO). Its full title is "Spring-type straight pins - Coiled, light duty". This standard covers: ISO 8751:2007 specifies the characteristics of coiled, light duty spring-type straight pins made of steel or of austenitic or martensitic stainless steel, with a nominal diameter of from 1,5 mm to 8 mm inclusive.
ISO 8751:2007 specifies the characteristics of coiled, light duty spring-type straight pins made of steel or of austenitic or martensitic stainless steel, with a nominal diameter of from 1,5 mm to 8 mm inclusive.
ISO 8751:2007 is classified under the following ICS (International Classification for Standards) categories: 21.060.50 - Pins, nails. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 8751:2007 has the following relationships with other standards: It is inter standard links to ISO 8751:1997. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 8751:2007 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 8751
Third edition
2007-04-15
Spring-type straight pins — Coiled, light
duty
Goupilles élastiques spiralées — Série mince
Reference number
©
ISO 2007
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ii © ISO 2007 – 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 8751 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 10, Product
standards for fasteners.
This third edition cancels and replaces the second edition (ISO 8751:1997), which has been technically
revised.
INTERNATIONAL STANDARD ISO 8751:2007(E)
Spring-type straight pins — Coiled, light duty
1 Scope
This International Standard specifies the characteristics of coiled light duty spring-type straight pins made of
steel or of austenitic or martensitic stainless steel, with a nominal diameter, d , from 1,5 mm to 8 mm inclusive.
NOTE Spring-type straight pins, coiled, heavy duty, and spring type straight pins, coiled, standard duty, are the
subjects of ISO 8748 and ISO 8750, respectively.
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 286-2, ISO system of limits and fits — Part 2: Tables of standard tolerance grades and limit deviations for
holes and shafts
ISO 3269, Fasteners — Acceptance inspection
ISO 4042, Fasteners — Electroplated coatings
ISO 6507-1, Metallic materials —Vickers hardness test — Part 1: Test method
ISO 8749, Pins and grooved pins — Shear test
3 Dimensions
See Figure 1 and Table 1.
a
Swaged chamfer at both ends.
Figure 1
Table 1 — Dimensions
Dimensions in millimetres
nom. 1,5 2 2,5 3 3,5 4 5 6 8
max. 1,75 2,28 2,82 3,35 3,87 4,
...
NORME ISO
INTERNATIONALE 8751
Troisième édition
2007-04-15
Goupilles élastiques spiralées — Série
mince
Spring-type straight pins — Coiled, light duty
Numéro de référence
©
ISO 2007
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© ISO 2007
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Publié en Suisse
ii © ISO 2007 – 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 8751 a été élaborée par le comité technique ISO/TC 2, Éléments de fixation, sous-comité SC 10,
Normes de produits pour les éléments de fixation.
Cette troisième édition annule et remplace la deuxième édition (ISO 8751:1997), dont elle constitue une
révision technique.
NORME INTERNATIONALE ISO 8751:2007(F)
Goupilles élastiques spiralées — Série mince
1 Domaine d'application
La présente Norme internationale spécifie les caractéristiques des goupilles élastiques spiralées, série mince,
en acier ou en acier inoxydable austénitique ou martensitique, de diamètre nominal, d , de 1,5 mm à 8 mm
inclus.
NOTE Les goupilles élastiques spiralées, séries épaisse et moyenne, font l'objet de l'ISO 8748 et de l'ISO 8750,
respectivement.
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 286-2, Système ISO de tolérances et d'ajustements — Partie 2: Tables des degrés de tolérance
normalisés et des écarts limites des alésages et des arbres
ISO 3269, Éléments de fixation — Contrôle de réception
ISO 4042, Éléments de fixation — Revêtements électrolytiques
ISO 6507-1, Matériaux métalliques — Essai de dureté Vickers — Partie 1: Méthode d'essai
ISO 8749, Goupilles et goupilles cannelées — Essai de cisaillement
3 Dimensions
Voir Figure 1 et Tableau 1.
a
Chanfrein étampé aux deux extrémités.
Figure 1
Tableau 1 — Dimensions
Di
...














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