EN ISO 8734:1997

Parallel pins, or hardened steel or martensitic stainless steel (Dowel pins) (ISO 8734:1997)

Zylinderstifte aus gehärtetem Stahl und martensitischem nichtrostendem Stahl (ISO 8734:1997)

Diese Internationale Norm beschreibt die Eigenschaften von Zylinderstiften aus Stahl, durchgehärtet oder einsatzgehärtet oder aus martensitischem nichtrostendem Stahl, mit Nenndurchmesser d von 1 mm bis einschließlich 20 mm.

Goupilles cylindriques en acier trempé et en acier inoxydable martensitique (ISO 8734:1997)

La présente Norme internationale prescrit les caractéristiques des goupilles cylindriques trempées à coeur ou cémentées et en acier inoxydable martensitique de diamètre nominal, d, de 1 mm à 20 mm inclus.

Valjasti zatiči, kaljeni ali iz martenzitnega nerjavnega jekla (ISO 8734:1997)

General Information

• Status: Published
• Publication Date: 14-Nov-1997
• ICS: 21.060 - Fasteners
• Technical Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Drafting Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 04-Feb-2008
• Completion Date: 04-Feb-2008
• Ref Project: SIST EN ISO 8734:2001 - Parallel pins, or hardened steel or martensitic stainless steel (Dowel pins) (ISO 8734:1997)

Overview

EN ISO 8734:1997 specifies the characteristics of parallel pins (dowel pins) manufactured from through-hardened or case-hardened steel and from martensitic stainless steel. The standard covers nominal diameters from 1 mm to 20 mm inclusive, dimensional tolerances, material requirements, surface condition and acceptance inspection references. It is widely used in mechanical assembly, tooling and precision engineering where reliable location and shear resistance are required.

Key Topics

• Scope and sizes: Nominal diameters d = 1–20 mm (inclusive). Commercial lengths and nominal length ranges are defined in the standard (see figure/table references in ISO 8734).
• Material types: Through-hardened steel, case-hardened steel (Type A/Type B), and martensitic stainless steel (grade C1 per ISO 3506-1) are specified as acceptable materials.
• Surface and finish: Pins are normally supplied plain (natural finish) with a protective lubricant unless otherwise agreed. Surface roughness is controlled (R < 0.8 µm) and pins must be free from irregularities or burrs.
• Coatings and embrittlement: If plated or phosphate-coated, treatments must avoid hydrogen embrittlement; electroplated/coated pins require appropriate post-treatment in line with ISO 4042.
• Acceptance: Acceptance inspection procedures follow ISO 3269. All dimensional tolerances apply prior to any plating or coating.
• Designation examples: Practical designation formats included in the standard:
  • Parallel pin ISO 8734 – 6 × 30 – A – St
  • Parallel pin ISO 8734 – 6 × 30 – C1

Applications

EN ISO 8734 dowel pins are used where precise location, repeatable positioning and shear load transmission are required. Typical applications include:

• Precision jigs, fixtures and tooling
• Engine and gearbox components for alignment and location
• Assembly and mating of pressed or machined parts in industrial equipment
• Fixtures and dies in metalworking and stamping operations

The standard helps designers and procurement professionals specify pins that offer consistent dimensional accuracy, appropriate material selection, and clear acceptance criteria for reliable assemblies.

Related Standards

• ISO 3269 - Fasteners: Acceptance inspection (referenced for acceptance procedures).
• ISO 3506-1 - Corrosion-resistant stainless steel fasteners (referenced for martensitic stainless requirements).
• ISO 4042 - Fasteners: Electroplated coatings (referenced for coating treatment and hydrogen embrittlement guidance).

For design and procurement, reference EN ISO 8734:1997 to ensure compatible dimensions, materials and surface treatments when specifying parallel pins (dowel pins) for secure, repeatable assemblies.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2001
9DOMDVWL]DWLþLNDOMHQLDOLL]PDUWHQ]LWQHJDQHUMDYQHJDMHNOD,62
Parallel pins, or hardened steel or martensitic stainless steel (Dowel pins) (ISO
8734:1997)
Zylinderstifte aus gehärtetem Stahl und martensitischem nichtrostendem Stahl (ISO
8734:1997)
Goupilles cylindriques en acier trempé et en acier inoxydable martensitique (ISO
8734:1997)
Ta slovenski standard je istoveten z: EN ISO 8734:1997
ICS:
21.060.50 =DWLþLåHEOML Pins, nails
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 8734
Second edition
1997-11-15
Parallel pins, of hardened steel and
martensitic stainless steel (Dowel pins)
Goupilles cylindriques en acier trempé et en acier inoxydable martensitique
A
Reference number
ISO 8734:1997(E)
ISO 8734:1997(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.
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.
International Standard ISO 8734 was prepared by Technical Committee
ISO/TC 2, Fasteners.
This second edition cancels and replaces the first edition (ISO 8734:1987),
which has been technically revised.
©  ISO 1997
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 the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet [e-mail]
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
ii
©
INTERNATIONAL STANDARD  ISO ISO 8734:1997(E)
Parallel pins of hardened steel and martensitic stainless steel
(Dowel pins)
1 Scope
This International Standard specifies the characteristics of parallel pins (dowel pins) of steel, through hardened
or case hardened and martensitic stainless steel with nominal diameters, d, from 1 mm to 20 mm inclusive.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the editions indicated were valid. All standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent e
...