prEN ISO 8744

SLOVENSKI STANDARD
01-februar-2024
Vezni elementi - Zasekani zatiči s stožčastimi utori - Progresivni zatiči z utori po
celotni dolžini (ISO/DIS 8744:2023)
Fasteners - Taper grooved pins - Full-length progressive grooves (ISO/DIS 8744:2023)
Verbindungselemente - Kegelkerbstifte (ISO/DIS 8744:2023)
Fixations - Goupilles cannelées progressives - Cannelures progressives sur toute la
longueur (ISO/DIS 8744:2023)
Ta slovenski standard je istoveten z: prEN ISO 8744
ICS:
21.060.50 Zatiči, žeblji Pins, nails
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 8744
ISO/TC 2 Secretariat: DIN
Voting begins on: Voting terminates on:
2023-11-30 2024-02-22
Fasteners — Taper grooved pins — Full-length progressive
grooves
Fixations — Goupilles cannelées progressives — Cannelures progressives sur toute la longueur
ICS: 21.060.50
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
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THEREFORE SUBJECT TO CHANGE AND MAY
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Reference number
NATIONAL REGULATIONS.
ISO/DIS 8744:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

ISO/DIS 8744:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 8744
ISO/TC 2 Secretariat: DIN
Voting begins on: Voting terminates on:

Fasteners — Taper grooved pins — Full-length progressive
grooves
Fixations — Goupilles cannelées progressives — Cannelures progressives sur toute la longueur
ICS: 21.060.50
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
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NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 8744:2023(E)
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Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

ISO/DIS 8744:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principles of grooved pins and assembly . 2
5 Dimensions .2
6 Requirements and reference International Standards . 5
7 Labelling on package .6
8 Designation . 6
Bibliography . 8
iii
ISO/DIS 8744:2023(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.
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 documents 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).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on 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 the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 2, Fasteners and by Technical Committee
CEN/TC 185, Fasteners in collaboration.
This third edition cancels and replaces the second edition (ISO 8744:1997) which has been technically
revised.
The main changes are as follows:
— terms and definitions, principles for grooved pins and assembly (including hole dimensions), control
of the expanded diameter d and pin straightness, mechanical and physical properties (including
shear resistance and hardness) and inspection which are common for all grooved pins (product
standards ISO 8744 to ISO 8747, ISO 13670 and ISO 13672) have been specified in the new reference
standard ISO 13669, general requirements;
— non-preferred diameters 1 mm, 3,5 mm, 7 mm, 9 mm, 14 mm and 18 mm have been added;
— values of expanded diameter d for steel pins have been slightly increased for the shortest length
range, and have been added for stainless steel pins;
— tolerances for the rounded end and values for the chamfered end have been added;
— stainless steel grades A2, A4, C1 and F1 have been added;
— other materials (such as hardened steels, brass, aluminium) are by agreement (see Table 3);
— specifications for labelling have been added as Clause 8.
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
DRAFT INTERNATIONAL STANDARD ISO/DIS 8744:2023(E)
Fasteners — Taper grooved pins — Full-length progressive
grooves
1 Scope
This document specifies the characteristics of taper grooved pins with full-length progressive grooves
(with closed end at the insertion side), in steel and stainless steel, and with nominal diameter 1 mm to
25 mm.
These grooved pins are designed to fulfil the main following function:
— locking together two or more parts,
with an easy installation (due to its shape) and a high level of pull-out resistance (due to the elastic fit
behavior of the pin).
The general requirements (including functional principles for grooved pins and assembly) are specified
in ISO 13669.
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.
1)
ISO 13669 , Fasteners — Grooved pins — General requirements
ISO 1891-4, Fasteners — Vocabulary — Part 4: Control, inspection, delivery, acceptance and quality
ISO 3269, Fasteners — Acceptance inspection
ISO 3506-6, Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part 6:
General rules for
...