ISO 5183-1:2026

• Abstract:

  This document specifies the dimensions and tolerances of resistance spot welding electrode adaptors where the fixing element for the cap (see ISO 5821 [2]) is a male taper of 1:10 and for which the electrode taper fits in conformance with ISO 1089 [3] .

• Status: Published
• Publication Date: 06-Aug-2026
• ICS: 25.160.30 - Welding equipment
• Technical Committee: ISO/TC 44/SC 6 - Resistance welding and allied mechanical joining
• Drafting Committee: ISO/TC 44/SC 6 - Resistance welding and allied mechanical joining
• Current Stage: 6060 - International Standard published
• Start Date: 07-Aug-2026
• Due Date: 09-Jun-2026
• Completion Date: 07-Aug-2026

• Consolidates: EN ISO 5183-1:2026 - Resistance welding equipment - Electrode adaptors, male taper 1:10 - Part 1: Conical fixing, taper 1:10 (ISO 5183-1:2026)
• Effective Date: 12-Feb-2026
• Consolidates: ISO 13616-1:2020 - Financial services — International bank account number (IBAN) — Part 1: Structure of the IBAN
• Effective Date: 07-Jan-2025
• Revises: ISO 5183-1:1998 - Resistance welding equipment — Electrode adaptors, male taper 1:10 — Part 1: Conical fixing, taper 1:10
• Effective Date: 07-Jan-2025

ISO 5183-1:2026 is an International Standard from ISO for resistance welding equipment. It specifies the dimensions, tolerances, designation, materials, and marking of resistance spot welding electrode adaptors with a male taper 1:10, for use with female electrode caps and taper fits defined by ISO 5821 and ISO 1089. It is aimed at manufacturers, suppliers, and users who need compatible adaptor parts for spot welding equipment.

What does ISO 5183-1:2026 specify?

ISO 5183-1:2026 specifies the geometry and identification of electrode adaptors used in resistance spot welding when the fixing element for the cap is a male taper 1:10 and the electrode taper fits ISO 1089. The document is organized into clauses on scope, normative references, terms and definitions, dimensions, designation, materials, and marking, plus one informative annex.

Part of the document	What it covers
Clause 4	Dimensions and tolerances for the adaptor types
Clause 5	How to designate a compliant adaptor
Clause 6	Material requirements
Clause 7	Marking on the adaptor
Annex A	Flat dimensions for wrench flats

The introduction also explains that these adaptors are intended for use when electrodes are mounted at an angle, and that Type C has longer taper fits than Type B.

What are the key requirements of ISO 5183-1:2026?

ISO 5183-1:2026 is mainly a dimensional and identification standard. In practice, it tells you how to make, order, and mark compatible electrode adaptors so they fit the intended cap and holder interfaces.

Dimensions and adaptor types

Clause 4 requires the adaptor dimensions to match Figure 1, Figure 2, Figure 3, Table 1, and Table 2. The document distinguishes Type A, Type B, and Type C adaptors, with Type C intended for longer taper fits.

For a buyer or engineer, this is the core interchangeability control. You use the figures and tables to check that the adaptor geometry matches the intended mounting arrangement and that the chosen size is one of the permitted combinations.

Preferred and non-preferred sizes

Tables 1 and 2 list the permitted diameter and length combinations and identify some sizes as non-preferred by placing them in parentheses. The tables also separate the dimensional data for Type A and B from Type C.

In practice, this helps standardize stock and procurement. A workshop can choose preferred sizes first, while still recognizing the allowable non-preferred options where needed.

Use with the correct mating parts

The note under the figures links Type A and Type B adaptors to electrode holders conforming to ISO 8430-1 and ISO 8430-2, while Type C is for taper fits according to ISO 1089. The introduction also states that these adaptors are designed for situations where electrodes are mounted at an angle.

That matters because the adaptor is not a stand-alone part. Its function depends on the holder and taper system it is paired with, so compatibility needs to be checked as a set.

Designation

Clause 5 requires the designation to include the description block, the document reference, the adaptor type, diameter, length, and material. The example shows how these elements are combined into a single ordering and identification string.

For users, this is the cleanest way to avoid confusion in purchasing and production. A complete designation tells the supplier exactly which adaptor configuration is required.

Materials and marking

Clause 6 requires the material to comply with ISO 5182 and says group A, type 2 is preferred. Clause 7 requires the adaptor to be marked with the designation from Clause 5, but without the description block and the reference number.

In practice, material control supports consistent performance in welding service, and marking supports traceability on the shop floor.

Optional wrench flats

Annex A gives flat dimensions for adaptors that are designed with wrench flats to make removal from a holder easier. This is useful when maintenance access matters and the adaptor needs to be released repeatedly without damage.

What terms does ISO 5183-1:2026 define?

• Electrode adaptor - The part covered by the standard that connects the electrode cap to the welding equipment interface.
• Male taper 1:10 - The conical fixing geometry used for the cap connection, with a 1:10 taper.
• Female electrode cap - The cap referred to through ISO 5821, which mates with the adaptor fixing element.
• Taper fit - The matching taper geometry used for the electrode interface, based on ISO 1089.
• Gauge plane - The reference plane shown in the figures from which the cone diameter is defined.
• Designation - The standardized naming string that identifies type, size, and material.
• Non-preferred size - A size shown in parentheses in the tables, indicating an allowed but not preferred option.

Who uses ISO 5183-1:2026?

ISO 5183-1:2026 is used by people who specify, manufacture, inspect, or buy resistance spot welding electrode adaptors. Typical users include:

• welding equipment manufacturers
• electrode and cap suppliers
• machine builders and integrators
• maintenance and tooling teams
• quality managers checking interchangeability and marking
• buyers ordering replacement adaptors against a defined size and material

The standard is especially useful when parts must fit existing holders and caps without trial fitting.

What changed in ISO 5183-1:2026 from the previous edition?

ISO 5183-1:2026 is the third edition and it cancels and replaces ISO 5183-1:1998. The document states that this is a minor revision, with updated normative references and editorial revisions. The introduction also says it remains technically aligned with the prior edition and includes Type C adaptors with longer taper fits than Type B.

Which standards are used with ISO 5183-1:2026?

Standard	What it contributes
ISO 5182	Material requirements for electrodes and ancillary equipment
ISO 5821	Female electrode caps referenced in the scope and figures
ISO 1089	Electrode taper fits and their dimensions
ISO 8430-1	Electrode holders with taper fixing 1:10
ISO 8430-2	Electrode holders with Morse taper fixing

ISO 5182 is the only normative reference in Clause 2. The other standards are named in the scope, notes, or bibliography because they define the mating parts and taper systems that this document depends on.

What does the ISO 5183-1:2026 document contain?

The document contains three dimensional figures for Types A, B, and C, with surface roughness notes and references to the gauge plane and electrode cap. It also contains two dimension tables for the main adaptor sizes, showing the approved diameter and length combinations and distinguishing preferred from non-preferred values.

Annex A adds a small table for flat dimensions where wrench flats are used, giving a practical option for easier removal from a holder. The bibliography lists the related standards that support the cap interface, taper fit, material selection, and holder compatibility.

International
Standard
ISO 5183-1
Third edition
Resistance welding equipment —
2026-08
Electrode adaptors, male taper
1:10 —
Part 1:
Conical fixing, taper 1:10
Matériel de soudage par résistance — Allonges d'électrode à
embout amovible, cône mâle 1:10 —
Partie 1: Emmanchement conique 1:10
Reference number
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions . 1
5 Designation . 1
6 Materials . 2
7 Marking . . 2
Annex A (informative) Flat dimensions . 5
Bibliography . 6

iii
Foreword
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This document was prepared Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 6, Resistance welding and allied mechanical joining, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 121, Welding and allied processes, in accordance with
the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 5183-1:1998), of which it constitutes a minor
revision. The changes are as follows:
— normative references updat
...

Norme
internationale
ISO 5183-1
Troisième édition
Matériel de soudage par
2026-08
résistance — Allonges d'électrode à
embout amovible, cône mâle 1:10 —
Partie 1:
Emmanchement conique 1:10
Resistance welding equipment — Electrode adaptors, male taper
1:10 —
Part 1: Conical fixing, taper 1:10
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2026
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, 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, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse
ii
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Dimensions . 1
5 Désignation . 1
6 Matériaux . 2
7 Marquage . 2
Annexe A (informative) Dimensions des méplats . 5
Bibliographie . 6

iii
Avant-propos
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été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
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commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 44, Soudage et techniques connexes, sous-
comité SC 6, Soudage par résistance et assemblage mécanique allié, en collaboration avec le comité technique
CEN/TC 121, Soudage et techniques connexes, du Comité européen de normalisation (CEN) conformément à
l’Accord de coopération technique entre l’ISO et le CEN (Accord de Vienne).
Cette troisième édition annule et remplace la deuxième (ISO 5183-1:1998) dont elle constitue une révision
mineure. Les modifications sont les suivantes:
— références normatives mises à jour;
— révisions éditoriales.
Une liste de toutes les parties de la série ISO 5183 est à retrouver sur le site de l'ISO.
Il convient que l’utilisateur adresse tout retour d’information ou toute question con
...