ISO 19998

• Abstract:

  This document specifies the essential bolting quality-related tasks and responsibilities included in structural bolting coordination.

• Status: Not Published
• ICS: 21.060.01 - Fasteners in general
• Technical Committee: ISO/TC 167 - Steel and aluminium structures
• Drafting Committee: ISO/TC 167 - Steel and aluminium structures
• Current Stage: 6000 - International Standard under publication
• Start Date: 29-Aug-2026
• Completion Date: 05-Sep-2026

Overview

ISO 19998: Structural Bolting Coordination-Tasks and Responsibilities is an international standard developed by the International Organization for Standardization (ISO). It sets out essential requirements for the coordination of bolting activities in the fabrication, erection, and maintenance of steel and aluminum structures. The standard clarifies tasks and assigns responsibilities to ensure the quality and reliability of structural bolted connections throughout all phases of construction projects.

Clear and well-defined bolting coordination is critical for safety, structural integrity, and compliance with regulatory and contract requirements. ISO 19998 establishes a consistent, quality-based approach to managing bolting procedures, personnel, and equipment, reducing risks and supporting dependable project outcomes.

Key Topics

• Defining Roles and Responsibilities: Specifies how bolting coordination tasks must be assigned to personnel, either as individuals or teams, and details job descriptions according to project needs.
• Coordination Tasks: Covers all aspects of structural bolting, including specification review, technical assessments, production planning, equipment verification, inspection, and documentation.
• Competence and Qualification: Outlines the required technical knowledge and competence levels for bolting coordination personnel, with guidance for comprehensive, specific, and basic roles based on complexity and criticality.
• Subcontracting Arrangements: Includes provisions for when bolting coordination tasks are outsourced, ensuring clarity in communication and responsibility.
• Inspection and Quality Control: Describes requirements for pre-bolting, during-bolting, and post-bolting inspection, as well as corrective actions in case of non-conformity.
• Health, Safety, and Environmental Considerations: Integrates requirements for compliance with relevant health, safety, and environmental regulations.

Applications

ISO 19998 is applicable in several industries and use cases, including:

• Steel and Aluminum Structure Construction: Used by contractors, engineers, and project managers to plan and oversee bolting work in bridges, buildings, towers, and other steel/aluminum structures.
• Fabrication and Assembly: Supports manufacturers in coordinating bolting quality control in both workshop and onsite assembly.
• Infrastructure Projects: Essential for public and private infrastructure initiatives, ensuring consistent bolting performance and regulatory compliance.
• Quality Management Systems: Integrates into broader quality management systems as a structural bolting process control mechanism.
• Contractual and Regulatory Compliance: Facilitates meeting client, contractual, and regulatory requirements for structural performance and safety.

The standard helps organizations assign the right personnel for complex, sensitive bolted connections while maintaining robust documentation and verification processes. It can enhance staff training programs, clarify project deliverables, and streamline coordination among stakeholders.

Related Standards

ISO 19998 is part of a family of international standards that together provide comprehensive coverage of steelwork execution and quality assurance. Key related standards include:

• ISO 17607 series: Covers the execution of structural steelwork, including general requirements (Part 1), fabrication (Part 3), erection (Part 4), and bolting (Part 6).
• ISO 14731: Provides guidance on coordination in welding, which aligns with several principles in bolting coordination regarding tasks and responsibilities.

Organizations implementing ISO 19998 should consult these related standards to ensure coherent and holistic quality management throughout the lifecycle of steel and aluminum structural projects.

By following ISO 19998, companies position themselves to deliver safer, more reliable, and regulation-compliant structures, reduce risks of structural failure, and achieve higher client satisfaction.

FINAL DRAFT
International
Standard
ISO/FDIS 19998
ISO/TC 167
Structural bolting coordination —
Secretariat: SN
Tasks and responsibilities
Voting begins on:
2026-07-03
Voting terminates on:
2026-08-28
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 19998:2026(en) © ISO 2026

FINAL DRAFT
ISO/FDIS 19998:2026(en)
International
Standard
ISO/FDIS 19998
ISO/TC 167
Structural bolting coordination —
Secretariat: SN
Tasks and responsibilities
Voting begins on:
Voting terminates on:
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2026
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ISO/FDIS 19998:2026(en) © ISO 2026

ii
ISO/FDIS 19998:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Tasks and responsibilities. 2
4.1 Bolting quality-related tasks .2
4.2 Specification of tasks and responsibilities .2
5 Job description . 3
5.1 General .3
5.2 Tasks .3
5.3 Responsibilities and extent of authorization.3
6 Technical knowledge and competence . 4
6.1 General .4
6.2 Competency levels for bolting coordination personnel .4
6.2.1 Comprehensive level .4
6.2.2 Specific level .4
6.2.3 Basic level .4
Annex A (normative) Bolting coordination tasks . 5
Annex B (informative) Assessment of bolting coordination personnel .10
Bibliography .11

iii
ISO/FDIS 19998:2026(en)
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 167, Steel and aluminium structures.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
ISO/FDIS 19998:2026(en)
Introduction
When structural bolting is performed, it is important for it to be coordinated properly to establish confidence
in the bolting quality and ensure reliable performance in service.
A clear definition of the tasks and responsibilities of bolting coordination personnel involved in bolting-
related activities (e.g. planning, executing, supervising and inspecting) is essential for proper coordination.
Specific requirements for bolting coordination personnel are sometimes included in regulatory documents,
application standards, and contracts.

v
FINAL DRAFT International Standard ISO/FDIS 19998:2026(en)
Structural bolting coordination — Tasks and responsibilities
1 Scope
This document specifies provisions for structural bolting coordination, including tasks and responsibilities.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 17607 (all parts), Steel structures — Execution of structural steelwork
3 Terms and definitions
For this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
contractor
entity carrying out bolting and related activities under the same technical and quality management
Note 1 to entry: Bolting and related activities can be carried out in a workshop or onsite or both, but the contractor
remains responsible for the bolting operations.
3.2
bolting coordination
coordination of operations for all bolting and bolting-related activities
Note 1 to entry: Bolting coordination can be assigned to an individual or a team.
3.3
bolting coordination personnel
person or group of people performing defined bolting coordination tasks
Note 1 to entry: Different personnel can be appointed by the contractor (3.1) for different bolting and related tasks.
Note 2 to entry: A qualification and/or practical experience can be required.
3.4
inspection
conformity evaluation of bolting variables by observation and judgment, accompanied as appropriate by
measurement or testing
Note 1 to entry: Bolting inspection is a part of bolting coordination.

ISO/FDIS 19998:2026(en)
3.5
skill
ability to apply knowledge and experience to complete tasks and solve problems
Note 1 to entry: Skills are described as cognitive (involving the use of logical, intuitive and creative thinking) or
practical (involving manual dexterity and the use of methods, materials, tools and instruments).
[SOURCE: ISO 14731:2019, 3.5]
3.6
knowledge
outcome of the assimilation of information, the body of facts, principles, theories and practices that is related
to a field of work, through learning (theoretical and/or factual)
[SOURCE: ISO 14731:2019, 3.6]
3.7
qualification
formal outcome of an assessment and validation process to determine that an individual has
achieved learning outcomes to a given program
[SOURCE: ISO 14731:2019, 3.7]
3.8
competence
proven ability to effectively use knowledge, skills and personal, social and/or methodological abilities, in a
wide variety of work situations in terms of responsibility and autonomy
[SOURCE: ISO 14731:2019, 3.8]
3.9
responsibility
accountability, duties, obligations and associated rights assigned by the contractor (3.1) as a result of
competence (3.8) in the job
[SOURCE: ISO 14731:2019, 3.9]
4 Tasks and responsibilities
4.1 Bolting quality-related tasks
Annex A shall be used by the contractor to assign bolting coordination tasks and responsibilities to bolting
coordination personnel. It may be supplemented for special applications. Not all the items are applicable to
all contractors or quality system requirements, and selection shall be made as appropriate.
EXAMPLE For example, where there is no post-installation testing specified, torque testing is not required.
4.2 Specification of tasks and responsibilities
Bolting coordination shall be the responsibility of the contractor.
The tasks of bolting coordination personnel shall be selected from Annex A and/or as specified, for example,
in application standards and other documents. The level of competence of bolting coordination personnel
shall be determined in accordance with the complexity of the bolting and related activities, product
type(s), criticality of the application, and the quality requirements described in or specified in ISO 17607-1,
ISO 17607-3, ISO 17607-4, ISO 17607-6, or other applicable standards.
Each task in Annex A can be associated with a number of activities, such as:
— specification and preparation;

ISO/FDIS 19998:2026(en)
— planning;
— production control;
— inspection, checking or witnessing.
The contractor shall appoint at least one person to be responsible for bolting coordination tasks.
Where more than one person carries out bolting coordination, the tasks and responsibilities shall be clearly
defined and assigned.
NOTE Clearly defining and assigning tasks and responsibilities ensures that competent persons are assigned to
each specific bolting coordination task.
If bolting coordination is subcontracted, the tasks and responsibilities shall be defined and documented.
However, compliance with this document shall remain the responsibility of the contractor.
EXAMPLE Examp
...

ISO/FDIS 19998:2025(en)
ISO/TC 167
Secretariat: SN
Date: 2026-04-2206-19
Structural bolting coordination ─ — Tasks and responsibilities
Coordination en boulonnage de construction métallique ─Tâches et responsabilités

FDIS stage
2 © ISO 2025 – All rights reserved

ISO/FDIS 19998:2026(en)
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: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
iii
ISO/FDIS 19998:2026(en)
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Tasks and responsibilities . 2
4.1 Bolting quality-related tasks . 2
4.2 Specification of tasks and responsibilities . 3
5 Job description . 3
5.1 General. 3
5.2 Tasks . 3
5.3 Responsibilities and extent of authorization . 4
6 Technical knowledge and competence . 4
6.1 General. 4
6.2 Competency levels for bolting coordination personnel. 4
Annex A (normative) Bolting coordination tasks . 6
Annex B (informative) Assessment of bolting coordination personnel . 11
Bibliography . 12

iv
ISO/FDIS 19998:2026(en)
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 167, Steel and aluminium structures.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
ISO/FDIS 19998:2026(en)
Introduction
When structural bolting is performed, it is important for it to be coordinated properly to establish confidence
in the bolting quality and ensure reliable performance in service.
A clear definition of the tasks and responsibilities of bolting coordination personnel involved in bolting-related
activities (e.g. planning, executing, supervising and inspecting) is essential for proper coordination.
Specific requirements for bolting coordination personnel are sometimes included in regulatory documents,
application standards, and contracts.
vi
ISO/FDIS 19998:2026(en)
Structural bolting coordination ─ — Tasks and responsibilities
1 Scope
This document specifies provisions for structural bolting coordination, including tasks and responsibilities.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 17607-1:2023, (all parts), Steel structures — Execution of structural steelwork — Part 1: General
requirements and terms and definitions
ISO 17607-3:2023, Steel structures — Execution of structural steelwork — Part 3: Fabrication
ISO 17607-4:2023, Steel structures — Execution of structural steelwork — Part 4: Erection
ISO 17607-6:2023, Steel structures — Execution of structural steelwork — Part 6: Bolting
3 Terms and definitions
For this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/
3.1 3.1
contractor
entity carrying out bolting and related activities under the same technical and quality management
Note 1 to entry: Bolting and related activities can be carried out in a workshop or onsite or both, but the contractor
remains responsible for the bolting operations.
3.2 3.2
bolting coordination
coordination of operations for all bolting and bolting-related activities
Note 1 to entry: Bolting coordination can be assigned to an individual or a team.
3.3 3.3
bolting coordination personnel
person or group of people performing defined bolting coordination tasks
Note 1 to entry: Different personnel can be appointed by the contractor (3.1(3.1)) for different bolting and related tasks.
Note 2 to entry: A qualification and/or practical experience maycan be required.
ISO/FDIS 19998:2026(en)
3.4 3.4
inspection
conformity evaluation of bolting variables by observation and judgment, accompanied as appropriate by
measurement or testing
Note 1 to entry: Bolting inspection is a part of bolting coordination.
3.5 3.5
skill
ability to apply knowledge and experience to complete tasks and solve problems
Note 1 to entry: Skills are described as cognitive (involving the use of logical, intuitive and creative thinking) or practical
(involving manual dexterity and the use of methods, materials, tools and instruments).
[SOURCE: ISO 14731:2019, 3.5]
3.6 3.6
knowledge
outcome of the assimilation of information, the body of facts, principles, theories and practices that is related
to a field of work, through learning (theoretical and/or factual)
[SOURCE: ISO 14731:2019, 3.6]
3.7 3.7
qualification
formal outcome of an assessment and validation process to determine that an individual has
achieved learning outcomes to a given program
[SOURCE: ISO 14731:2019, 3.7]
3.8 3.8
competence
proven ability to effectively use knowledge, skills and personal, social and/or methodological abilities, in a
wide variety of work situations in terms of responsibility and autonomy
[SOURCE: ISO 14731:2019, 3.8]
3.9 3.9
responsibility
accountability, duties, obligations and associated rights assigned by the contractor (3.1(3.1)) as a result of
competence (3.8(3.8)) in the job
[SOURCE: ISO 14731:2019, 3.9]
4 Tasks and responsibilities
4.1 Bolting quality-related tasks
Annex AAnnex A shall be used by the contractor to assign bolting coordination tasks and responsibilities to
bolting coordination personnel. It may be supplemented for special applications. Not all the items are
applicable to all contractors or quality system requirements, and selection shall be made as appropriate.
EXAMPLE For example, where there is no post-installation testing specified, torque testing is not required.
ISO/FDIS 19998:2026(en)
4.2 Specification of tasks and responsibilities
Bolting coordination shall be the responsibility of the contractor.
The tasks of bolting coordination personnel shall be selected from Annex AAnnex A and/or as specified, for
example, in application standards and other documents. The level of competence of bolting coordination
personnel shall be determined in accordance with the complexity of the bolting and related activities, product
type(s), criticality of the application, and the quality requirements described in or specified in ISO 17607-1,
ISO 17607-3, ISO 17607-4, ISO 17607-6, or other applicable standards.
Each task in Annex AAnnex A can be associated with a number of activities, such as:
— — specification and preparation;
— — planning;
— — production control;
— — inspection, checking or witnessing.
The contractor shall appoint at least one person to be responsible for bolting coordination tasks.
Where more than one person carries out bolting coordination, the tasks and responsibilities shall be clearly
defined and assigned.
NOTE Clearly defining and assigning tasks and responsibilities ensures that competent persons are assigned to each
specific bolting coordination task.
If bolting coordination is subcontracted, the tasks and responsibilities shall be defined and documented.
However, compliance with this document shall remain the responsibility of the contractor.
EXAMPLE Examples of items to be addressed when bolting coordination is subcontracted:
a) a) a provision for the subcontracted bolting coordination personnel to visit the premises, routine or
otherwise;
b) b) reports of all visits, including purpose and activities carried out.
5 Job description
5.1 General
The contractor shall prepare job descriptions for all bolting coordination personnel. The job descriptions for
bolting coordination personnel shall include at least their tasks and responsibilities and their extent of
authorization, see 5.25.2 and 5.35.3.
The contractor shall determine the level of education, qualification, and experience (see Clause 6Clause 6))
required for bolting coordination personnel.
Each contractor is responsible for the appointment of their bolting coordination personnel. This appointment
is not transferable to other contractors. Appointment of tasks to other contractors does not relieve the primary
contractor of responsibility for that task.
5.2 Tasks
The tasks assigned to bolting coordination personnel shall be identified in accordance with 4.24.2.
ISO/FDIS 19998:2026(en)
5.3 Responsibilities and extent of authorization
The responsibilities and the extent of authorization assigned to bolting coordination pe
...