SIST EN ISO 8750:2009

Spring-type straight pins - Coiled, standard duty (ISO 8750:2007)

ISO 8750:2007 specifies the characteristics of coiled, standard duty spring-type straight pins made of steel or of austenitic or martensitic stainless steel, with a nominal diameter of from 0,8 mm to 20 mm inclusive.

Spiralspannstifte - Regelausführung (ISO 8750:2007)

Diese Internationale Norm beschreibt die Eigenschaften von Spiralspannstiften aus Stahl oder aus austenitischem oder martensitischem nichtrostenden Stahl, Regelausführung, mit Nenndurchmesser d1 von 0,8 mm bis einschließlich 20 mm.
ANMERKUNG   Spiralspannstifte in schwerer Ausführung und in leichter Ausführung werden in ISO 8748 und ISO 8751 beschrieben.

Goupilles élastiques spiralées - Série moyenne (ISO 8750:2007)

L'ISO 8750:2007 spécifie les caractéristiques des goupilles élastiques spiralées, série moyenne, en acier ou en acier inoxydable austénitique ou martensitique, de diamètre nominal compris entre 0,8 mm et 20 mm inclus.

Valjasto zviti vzmetni zatiči - Standardna izvedba (ISO 8750:2007)

General Information

• Status: Published
• Publication Date: 05-Mar-2009
• ICS: 21.060.50 - Pins, nails
• Technical Committee: ISEL - Mechanical elements
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Feb-2009
• Due Date: 25-Apr-2009
• Completion Date: 06-Mar-2009
• Ref Project: EN ISO 8750:2007 - Spring-type straight pins - Coiled, standard duty (ISO 8750:2007)

Relations

• Replaces: SIST EN ISO 8750:2001 - Spring-type straight pins - Coiled, standard duty (ISO 8750:1997)
• Effective Date: 01-May-2009

Overview

SIST EN ISO 8750:2009 is an internationally recognized standard specifying the characteristics of coiled, standard duty spring-type straight pins. These pins are manufactured from steel or austenitic or martensitic stainless steel and cover nominal diameters ranging from 0.8 mm to 20 mm inclusive. As a key part of the fasteners category, this standard ensures consistent quality, dimensions, and mechanical properties across manufacturing and sourcing worldwide.

Prepared under the collaboration of ISO Technical Committee ISO/TC 2 (Fasteners) and CEN/TC 185, SIST EN ISO 8750:2009 replaces the earlier 1997 edition, introducing technical revisions to align with current industrial demands. The standard is applicable across Europe, incorporated into national standards by CEN member countries, promoting harmonization of fastener specifications.

Key Topics

• Material Specifications: Pins are made from steel, austenitic stainless steel, or martensitic stainless steel with defined chemical compositions to ensure mechanical performance and corrosion resistance.
• Dimensions and Tolerances: Detailed dimensional criteria include nominal diameters from 0.8 mm to 20 mm and lengths from 4 mm up to 200 mm and beyond in 20 mm increments, with precise tolerances for diameter and length. Chamfered ends and coiled construction are standard features.
• Mechanical Properties: Pins are hardened and tempered to specific hardness ranges (Vickers hardness 420 HV to 560 HV depending on material), ensuring reliable shear strength. Shear tests conform to ISO 8749, and acceptance inspections follow ISO 3269.
• Surface Finish: The default finish is plain with a protective lubricant, while plating or coating is avoided unless specified, to minimize hydrogen embrittlement risks. If electroplating is applied, baking post-plating is required per ISO 4042 guidelines.
• Application Guidelines: Installation requires a mating hole diameter matching the nominal pin diameter with tolerance classes H12 or H10 depending on diameter size, guaranteeing optimal fit and function.

Applications

Spring-type straight pins covered by SIST EN ISO 8750:2009 serve critical roles in mechanical assemblies requiring reliable fastening and positioning under standard duty stress conditions. Typical applications include:

• Engineering and Manufacturing: Used in machinery assemblies to secure components with secure retention yet easy disassembly.
• Automotive Industry: Employed in engine, transmission, and suspension components for durability and precise alignment.
• Electrical Equipment: Provide secure connections in switchgear and other electrical assemblies where consistent fastener performance is required.
• General Industrial Use: Versatile fasteners in production lines, tooling, jigs, and fixtures.

This standard ensures users can specify pins with confidence in material properties, dimensions, and mechanical strength to enhance product reliability and safety.

Related Standards

SIST EN ISO 8750:2009 interacts with and complements several other relevant standards in the realm of spring pins and fasteners:

• ISO 8748: Specifies coiled spring-type straight pins for heavy duty applications.
• ISO 8751: Covers coiled spring-type straight pins for light duty applications.
• ISO 286-2: System of limits and fits - important for hole tolerances when assembling pins.
• ISO 8749: Details the shear test method for pins, fundamental for quality verification.
• ISO 3269: Outlines acceptance inspection procedures for fasteners.
• ISO 4042: Provides guidelines on electroplated coatings minimizing hydrogen embrittlement risk.
• ISO 6507-1: Describes the Vickers hardness test method for metallic materials used in quality control.

By conforming to SIST EN ISO 8750:2009 and its complementary standards, manufacturers and end-users gain assurance in the uniformity, safety, and performance of spring-type straight pins tailored for standard duty fastening needs.

---

Keywords: SIST EN ISO 8750:2009, spring-type straight pins, coiled pins, standard duty spring pins, steel pins, stainless steel pins, fasteners standard, pin dimensions, pin hardness, shear strength, ISO 8749, ISO 8751, ISO 8748, ISO 3269 fastener inspection, hydrogen embrittlement prevention, pin tolerances, ISO standards for fasteners, mechanical fasteners, CEN standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2009
1DGRPHãþD
SIST EN ISO 8750:2001
9DOMDVWR]YLWLY]PHWQL]DWLþL6WDQGDUGQDL]YHGED,62
Spring-type straight pins - Coiled, standard duty (ISO 8750:2007)
Spiralspannstifte - Regelausführung (ISO 8750:2007)
Goupilles élastiques spiralées - Série moyenne (ISO 8750:2007)
Ta slovenski standard je istoveten z: EN ISO 8750:2007
ICS:
21.060.50 =DWLþLåHEOML Pins, nails
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 8750
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2007
ICS 21.060.50 Supersedes EN ISO 8750:1997
English Version
Spring-type straight pins - Coiled, standard duty (ISO
8750:2007)
Goupilles élastiques spiralées - Série moyenne (ISO Spiralspannstifte - Regelausführung (ISO 8750:2007)
8750:2007)
This European Standard was approved by CEN on 22 March 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8750:2007: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 8750:2007) 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 DIN.
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 October 2007, and conflicting national
standards shall be withdrawn at the latest by October 2007.

This document supersedes EN ISO 8750:1997.

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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
Kingdom.
Endorsement notice
The text of ISO 8750:2007 has been approved by CEN as EN ISO 8750:2007 without any
modifications.
INTERNATIONAL ISO
STANDARD 8750
Third edition
2007-04-15
Spring-type straight pins —
Coiled, standard duty
Goupilles élastiques spiralées — Série moyenne

Reference number
ISO 8750:2007(E)
©
ISO 2007
ISO 8750:2007(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2007
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 2007 – All rights reserved

ISO 8750:2007(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.
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 8750 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 8750:1997), which has been technically
revised.
...