EN ISO 7083:2021

SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN ISO 7083:2001
Tehnična dokumentacija izdelkov - Simboli za uporabo v tehnični dokumentaciji
izdelkov - Sorazmerja in mere (ISO 7083:2021)
Technical product documentation - Symbols used in technical product documentation -
Proportions and dimensions (ISO 7083:2021)
Technische Produktdokumentation - Symbole für die Technische Produktdokumentation -
Größenverhältnisse und Maße (ISO 7083:2021)
Documentation technique de produits - Symboles utilisés dans la documentation
technique de produits - Proportions et dimensions (ISO 7083:2021)
Ta slovenski standard je istoveten z: EN ISO 7083:2021
ICS:
01.100.01 Tehnično risanje na splošno Technical drawings in general
01.110 Tehnična dokumentacija za Technical product
izdelke documentation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 7083
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 01.100.20 Supersedes EN ISO 7083:1994
English Version
Technical product documentation - Symbols used in
technical product documentation - Proportions and
dimensions (ISO 7083:2021)
Documentation technique de produits - Symboles Technische Produktdokumentation - Symbole für die
utilisés dans la documentation technique de produits - Technische Produktdokumentation -
Proportions et dimensions (ISO 7083:2021) Größenverhältnisse und Maße (ISO 7083:2021)
This European Standard was approved by CEN on 24 April 2021.

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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7083:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 7083:2021) has been prepared by Technical Committee ISO/TC 10 "Technical
product documentation" in collaboration with CCMC.
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 November 2021, and conflicting national standards
shall be withdrawn at the latest by November 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 7083:1994.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 7083:2021 has been approved by CEN as EN ISO 7083:2021 without any modification.

INTERNATIONAL ISO
STANDARD 7083
Second edition
2021-05
Technical product documentation —
Symbols used in technical product
documentation — Proportions and
dimensions
Documentation technique de produits — Symboles utilisés dans la
documentation technique de produits — Proportions et dimensions
Reference number
ISO 7083:2021(E)
©
ISO 2021
ISO 7083:2021(E)
© ISO 2021
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General conditions . 1
5 Dimensions . 1
6 Proportions . 2
Bibliography .80
Symbol name index .83
Document index .100
ISO 7083:2021(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 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 10, Technical product documentation,
Subcommittee SC 1, Basic conventions, in collaboration with the European Committee for Standardization
(CEN) Technical Committee CEN/SS F01, Technical drawings, in accordance with the Agreement on
technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 7083:1983), which has been technically
revised.
The main changes to the previous edition are as follows:
— added symbols for standards under ISO/TC 10 and ISO/TC 213.
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 2021 – All rights reserved

ISO 7083:2021(E)
Introduction
This document is a collection of all the current symbols used in technical product documentation,
predominantly created in ISO/TC 10 and ISO/TC 213. The symbols are indexed to the individual
standards in which they were created and implemented. The ISO/TC 10/SC 1 validation process ensures
the harmonization of symbols.
When developing new symbols for use in technical drawings, new symbols are submitted to ISO/TC 10
for review. ISO/TC 10 will confirm that a duplicate symbol with a different meaning does not exist
and will add the new symbol to this document once the originating standard has been approved and
published.
The following is a description of the process used for incorporating a new symbol:
a) The originator fills in the new symbol application form.
b) The originator attaches the symbol graphics file per the accepted graphics formats in the form.
c) The originator sends the application and graphics file to ISO/TC 10/SC 1.
d) ISO/TC 10/SC 1 forwards the documents to the validation team (appointed group of experts).
e) The validation team reviews the application and symbol according to the following areas:
— justification for new symbol;
— design;
— conformity with ISO 81714-1;
— duplication and similarity to existing and registered symbols.
f) The validation team prepares their report and sends the application documents back to
ISO/TC 10/SC 1. Rejected proposals are sent back to the originator with an attached cause of
rejection.
g) If the new symbol request is approved, the originator is notified and the symbol is appointed a
registry number and submitted to ISO Central Secretariat for registration and publication on the
ISO Online browsing platform: https:// www .iso .org/ obp.
h) The approved new symbol is added to the list of symbols to be added to the next revision of this
document.
INTERNATIONAL STANDARD ISO 7083:2021(E)
Technical product documentation — Symbols used in
technical product documentation — Proportions and
dimensions
1 Scope
This document specifies the recommended proportions for the symbols used in technical product
documentation. It gives recommended dimensions based on the grid related to the line width to be
used.
This document does not apply to symbols used in process plant documentation, which are covered in
ISO 81714-1.
The proportions of the symbols are based on the standard heights of lettering given in ISO 3098-1.
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 3098-1, Technical product documentation — Lettering — Part 1: General requirements
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 General conditions
The lettering used with the symbols shall be in accordance with the specifications of ISO 3098-1.
On any one drawing the height, line width and type of lettering of the symbols should be equal to those
applied for the dimensioning and other indications on that drawing.
The symbols and their lettering are produced by digital means or may be hand-written (using a rule
for drawing the frames) or executed by other appropriate methods (e.g. stencils, transfers, mechanical
drawing).
5 Dimensions
Recommended dimensions of the symbols with lettering type A are specified in Table 1; dimensions for
those with lettering type B are specified in Table 2.
ISO 7083:2021(E)
Table 1 — Lettering type A
Dimensions in millimetres
Characteristic Recommended dimensions
Height of frame (H) 7 10 14 20 28 40
Height of characters (h) 3,5 5 7 10 14 20
a
Datum target indicator diameter (D) 14 20 28 40 58 80
Line width (d) 0,25 0,35 0,5 0,7 1 1,4
a
See Table 10.
Table 2 — Lettering type B
Dimensions in millimetres
Characteristic Recommended dimensions
Height of frame (H) 5 7 10 14 20 28 40
Height of characters (h) 2,5 3,5 5 7 10 14 20
a
Datum target indicator diameter (D) 10 14 20 28 40 56 80
Line width (d) 0,25 0,35 0,5 0,7 1 1,4 2
a
See Table 10.
The recommended widths of tolerance indicators frame are:
— first compartment, equal to height of frame (H);
— second compartment, to suit the length of the inscription;
— third and subsequent compartments, if required, to suit the width of the reference letter (or letters).
The distances between the vertical strokes of the compartments and the inscriptions shall be at least
twice the line width, with a minimum of 0,7 mm.
6 Proportions
Examples for the proportions of the symbols for use with lettering type B, vertical or inclined, are
shown in Table 3 to Table 50. The values are not part of the symbols.
The configurations are depicted on a grid with a spacing equal to the line width. The design of the
inscribed characters is mostly not shown but shall be the same as in ISO 3098-1 for lettering type B,
vertical or inclined.
For the alternative lettering type A, vertical or inclined, appropriate grids should be used.
The symbols in ISO 128-2:2020 are shown in Table 3.
Table 3 — ISO 128-2:2020 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Dot
ISO 128-2
The symbols in ISO 128-3:2020 are shown in Table 4.
2 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 4 — ISO 128-3:2020 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
First angle projection
2 ISO 128-3
ISO 5456-2
Third angle projection
3 ISO 128-3
ISO 5456-2
Reference arrow
4 ISO 128-3
Letter A shown as an example.
Arc arrow
5 ISO 128-3
Letter X and Y shown as examples.
Symmetry
ISO 128-3
ISO 129-1
The symbol is the two vertical lines (shown
applied to a centreline).
30° cuts and section arrows
7 ISO 128-3
Letter A shown as an example.
90° cuts and section arrows
8 ISO 128-3
Letter A shown as an example.
Direction of view
ISO 128-3
Cutting plane
10 ISO 128-3
Letter B shown as an example.
Location of detail
ISO 128-3
Direct orthographic projection
ISO 128-3
Mirrored orthographic projection
ISO 128-3
The symbols in ISO 128-15:2013 are shown in Table 5.
ISO 7083:2021(E)
Table 5 — ISO 128-15:2013 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Amidship
ISO 128-15
Generic seam
ISO 128-15
Segmentation seam
ISO 128-15
Small opening section
ISO 128-15
Small opening section
ISO 128-15
Centre line
ISO 128-15
(see ISO 3098-1)
Rounded line
ISO 128-15
(see ISO 3098-1)
Frame number
ISO 128-15
(see ISO 3098-1)
Moulded base line
ISO 128-15
(see ISO 3098-1)
Waterline
ISO 128-15
(see ISO 3098-1)
Projection direction (bow direction)
ISO 128-15
4 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 5 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Projection direction (stern direction)
ISO 128-15
Swage and groove; front side
ISO 128-15
Swage and groove; back side
ISO 128-15
Swage and groove; front side
ISO 128-15
Swage and groove; back side
ISO 128-15
Swage and groove; front side
ISO 128-15
Swage and groove; back side
ISO 128-15
The symbols in ISO 129-1:2018 are shown in Table 6.
Table 6 — ISO 129-1:2018 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Diameter
32 ISO 129-1
ISO 5261
Radius
ISO 129-1
(see ISO 3098-1)
Spherical radius
ISO 129-1
(see ISO 3098-1)
Square
35 ISO 129-1
ISO 5261
Spherical diameter
ISO 129-1
Repeated spacing
37 ISO 129-1
ISO 6433
Indication of a point
ISO 129-1
ISO 7083:2021(E)
Table 6 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Indication of level
ISO 129-1
Out-of-scale
40 ISO 129-1
(see ISO 3098-1) The number 50 is shown as an example of application.
Auxiliary dimension
41 ISO 129-1
(see ISO 3098-1)
The number 50 is shown as an example of application.
Symmetry
ISO 129-1
ISO 128-3
The symbol is the two vertical lines (shown applied to a
centreline).
Origin of a cartesian coordinate system
ISO 129-1
Separation symbol (point)
ISO 129-1
Plus or minus
45 ISO 129-1
ISO 13715
Arc length
46 ISO 129-1
ISO 129-5
Thickness of thin objects
ISO 129-1
Depth
ISO 129-1
Cylindrical counterbore
ISO 129-1
Countersink
ISO 129-1
Developed length
ISO 129-1
Surface indicator
ISO 129-1
Between
ISO 129-1
6 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 6 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Flagnote
ISO 129-1
ISO/TS 17863
The flagnote symbol is used with a number placed
inside of it.
Flagnote
ISO 129-1
ISO 14405-1
The flagnote symbol is used with a number placed
inside of it.
Flagnote
ISO 129-1
The flagnote symbol is used with a number placed
inside of it.
Flagnote
ISO 129-1
The flagnote symbol is used with a number placed
inside of it.
Arrowhead, closed and filled
ISO 129-1
Arrowhead, closed
ISO 129-1
Arrowhead, open
ISO 129-1
Arrowhead, open, included angle 90
ISO 129-1
Oblique stroke
ISO 129-1
Point
ISO 129-1
Origin circle
ISO 129-1
The symbols in ISO 129-4:2013 are shown in Table 7.
ISO 7083:2021(E)
Table 7 — ISO 129-4:2013 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Flanged plate
ISO 129-4
Flat bar
ISO 129-4
Round steel bar
ISO 129-4
Steel pipe
ISO 129-4
Square steel bar
ISO 129-4
Square hollow section
ISO 129-4
Half round steel
ISO 129-4
Bulb flat
or
ISO 129-4
Equal L-section
ISO 129-4
ISO 129-5
ISO 5261
Unequal L-section
ISO 129-4
T-steel
ISO 129-4
Steel channel
ISO 129-4
ISO 129-5
ISO 5261
I profile
ISO 129-4
ISO 129-5
ISO 5261
Combined flat ball steel
ISO 129-4
8 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 7 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Bracket
ISO 129-4
(see ISO 3098-1)
Bracket web
ISO 129-4
(see ISO 3098-1)
Web
ISO 129-4
(see ISO 3098-1)
Face plate
ISO 129-4
(see ISO 3098-1)
Flange
ISO 129-4
(see ISO 3098-1)
Tripping bracket
ISO 129-4
(see ISO 3098-1)
Shaft system section
ISO 129-4
Coaming height
ISO 129-4
(see ISO 3098-1)
Manhole
ISO 129-4
(see ISO 3098-1)
The symbols in ISO 129-5:2018 are shown in Table 8
Table 8 — ISO 129-5:2018 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Arc length
88 ISO 129-1
ISO 129-5
Equal or unequal leg angle iron
89 ISO 129-5
ISO 5261
I-beam section
90 ISO 129-5
ISO 5261
ISO 7083:2021(E)
Table 8 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Channel section
91 ISO 129-5
ISO 5261
H-beam section
92 ISO 129-5
ISO 5261
T section
ISO 129-5
Flat bar/plate
ISO 129-5
Single round-headed flats
ISO 129-5
Double round-headed flats
ISO 129-5
Unequal round-headed flats
ISO 129-5
Chamfered flats
ISO 129-5
Diamond section
ISO 129-5
Trapezoidal section
ISO 129-5
Angle–square section
ISO 129-5
Oval tube
ISO 129-5
Slot with round end tube
ISO 129-5
Right-angled trapezoid tube
ISO 129-5
Thin-walled equal leg angle with inner edge
ISO 129-5
Scalene channel section
ISO 129-5
Channel section with inner edge
ISO 129-5
Hat section
ISO 129-5
10 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 8 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Z-section
109 ISO 129-5
ISO 5261
Thin-walled lip Z section
ISO 129-5
Thin-walled oblique lip Z section
ISO 129-5
Rectangular hollow section/rectangle tube
ISO 129-5
P section tube
ISO 129-5
The symbols in ISO 286-1:2010 are shown in Table 9.
Table 9 — ISO 286-1:2010 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Standard tolerance grade value
ISO 286-1
The symbols in ISO 1101:2017 are shown in Table 10.
Table 10 — ISO 1101:2017 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Straightness
ISO 1101
Flatness
ISO 1101
Roundness
ISO 1101
Cylindricity
ISO 1101
Line profile
ISO 1101
Surface profile
ISO 1101
Parallelism
ISO 1101
ISO 7083:2021(E)
Table 10 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Perpendicularity
ISO 1101
Angularity
ISO 1101
Position
ISO 1101
Coaxiality (for median line), concentricity (for
centre points)
ISO 1101
Symmetry
ISO 1101
Circular run-out
ISO 1101
Total run-out
ISO 1101
Geometrical specification indication with datums
section
ISO 1101
ISO 5459
Geometrical specification indication without
datum section
ISO 1101
Datum feature indicator
131 ISO 1101
ISO 5459
Datum target indicator
132 ISO 1101
ISO 5459
Theoretically exact dimension (TED)
ISO 1101
Minimax (chebyshev) feature
ISO 1101
Least squares (Gaussian) feature
ISO 1101
Minimum circumscribed feature
ISO 1101
12 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 10 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Tangent feature
ISO 1101
Maximum inscribed feature
ISO 1101
Derived feature
ISO 1101
Projected tolerance zone
ISO 1101
Maximum material requirement
141 ISO 1101
ISO 2692
Least material requirement
142 ISO 1101
ISO 2692
Reciprocity requirement
143 ISO 1101
ISO 2692
Free state condition (non-rigid parts)
ISO 1101
ISO 10579
ISO 14405-1
Envelope requirement
145 ISO 1101
ISO 14405-1
All around (profile)
146 ISO 1101
ISO 10135
All over (profile)
147 ISO 1101
ISO 10135
Orientation constraint only
148 ISO 1101
ISO 5459
Minimax (chebyshev) feature without constraint
ISO 1101
(see ISO 3098-1)
Minimax (chebyshev) feature with external mate-
rial constraint
(see ISO 3098-1) ISO 1101
ISO 7083:2021(E)
Table 10 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Minimax (chebyshev) feature with internal mate-
rial constraint
(see ISO 3098-1) ISO 1101
Constrained external to the material
ISO 1101
(see ISO 3098-1)
Least squares (Gaussian) feature without con-
straint
(see ISO 3098-1) ISO 1101
Least squares (Gaussian) feature with external
material constraint
(see ISO 3098-1) ISO 1101
Least squares (Gaussian) feature with internal
material constraint
(see ISO 3098-1) ISO 1101
Constrained internal to the material
ISO 1101
(see ISO 3098-1)
Minimum circumscribed feature
ISO 1101
(see ISO 3098-1)
Maximum inscribed feature
ISO 1101
(see ISO 3098-1)
Total range of deviations
ISO 1101
(see ISO 3098-1)
Peak height
ISO 1101
(see ISO 3098-1)
Valley depth
ISO 1101
(see ISO 3098-1)
Standard deviation
ISO 1101
(see ISO 3098-1)
Contacting feature
163 ISO 1101
(see ISO 3098-1)
ISO 5459
Combination specification elements – combined
zone
(see ISO 3098-1) ISO 1101
Combination specification elements – separate
zones
(see ISO 3098-1) ISO 1101
14 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 10 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Unequal zone specification elements – specified
tolerance zone offset
(see ISO 3098-1) ISO 1101
Unspecified linear tolerance zone offset (offset
zone)
(see ISO 3098-1) ISO 1101
Unspecified angular tolerance zone offset (varia-
ble angle)
ISO 1101
(see ISO 3098-1)
ISO 5459
Minor diameter
ISO 1101
(see ISO 3098-1)
United feature
ISO 1101
(see ISO 3098-1)
Major diameter
ISO 1101
(see ISO 3098-1)
Pitch diameter
ISO 1101
(see ISO 3098-1)
Any cross-section
173 ISO 1101
(see ISO 3098-1)
ISO 5459
Direction feature indicator
ISO 1101
ISO 14405-1
The indicator frame is not part of this symbol and is
only shown to assist with the understanding of the
symbol.
Collection plane indicator
ISO 1101
The indicator frame is not part of this symbol and is
only shown to assist with the understanding of the
symbol.
Intersection plane indicator
ISO 1101
ISO 14405-1
The indicator frame is not part of this symbol and is
only shown to assist with the understanding of the
symbol.
ISO 7083:2021(E)
Table 10 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Orientation plane indicator
ISO 1101
The indicator frame is not part of this symbol and is
only shown to assist with the understanding of the
symbol.
Between
178 ISO 1101
ISO 14405-1
The symbols in ISO 1302:2002 are shown in Table 11.
Table 11 — ISO 1302:2002 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Surface texture, basic
ISO 1302
Surface texture, material removal required
ISO 1302
Surface texture, material removal not permitted
ISO 1302
Surface texture, basic, complete
ISO 1302
Surface texture, all surfaces around a workpiece
outline (circle), example shown on leader line
ISO 1302
Surface texture, material removal required, com-
plete
ISO 1302
Surface texture, material removal not permitted,
complete
ISO 1302
Lay orientation, parallel
186 ISO 1302
ISO 25178-1
16 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 11 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Lay orientation, perpendicular
187 ISO 1302
ISO 25178-1
Lay orientation, crossed in oblique directions
188 ISO 1302
ISO 25178-1
Lay orientation, multi-directional
189 ISO 1302
ISO 25178-1
Lay orientation, circular
190 ISO 1302
ISO 25178-1
Lay orientation, radial
191 ISO 1302
ISO 25178-1
Lay orientation, particulate
192 ISO 1302
ISO 25178-1
The symbols in ISO 2162-1:1993 are shown in Table 12.
Table 12 — ISO 2162-1:1993 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Right hand
ISO 2162-1
(see ISO 3098-1)
Left hand
ISO 2162-1
(see ISO 3098-1)
The symbols in ISO 2203:1973 are shown in Table 13.
Table 13 — ISO 2203:1973 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Helical to the right
ISO 2203
Helical to the left
ISO 2203
The symbols in ISO 2692:2014 are shown in Table 14.
ISO 7083:2021(E)
Table 14 — ISO 2692:2014 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Reciprocity requirement
197 ISO 2692
ISO 1101
Maximum material requirement
198 ISO 2692
ISO 1101
Least material requirement
199 ISO 2692
ISO 1101
The symbols in ISO 3040:2016 are shown in Table 15.
Table 15 — ISO 3040:2016 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Cone
ISO 3040
The symbols in ISO 3766:2003 are shown in Table 16.
Table 16 — ISO 3766:2003 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Reinforcement without prestressing:
views: general representation of bar
ISO 3766
Reinforcement without prestressing:
views: bent reinforcing bar, representation
as a polygonal continuous line
ISO 3766
Reinforcement without prestressing:
views: bent reinforcing bar, representation
as a continuous line made up of straight
lines and arcs
ISO 3766
Reinforcement without prestressing:
views: bundle of bars
ISO 3766
Reinforcement without prestressing: sec-
tion of bar: section of single reinforcement
bar
ISO 3766
18 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 16 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Reinforcement without prestressing: sec-
tion of bar: bundle of two reinforcing bars
ISO 3766
Reinforcement without prestressing:
section of bar: bundle of three reinforcing
bars
ISO 3766
Reinforcement without prestressing: bar
with hook anchoring: elevation of bar ter-
minating in a 90° bend
ISO 3766
Reinforcement without prestressing: bar
with hook anchoring: elevation of bar ter-
minating in a bend between 90° and 180°
ISO 3766
Reinforcement without prestressing: bar
with hook anchoring: elevation of bar ter-
minating in a 180° bend
ISO 3766
Reinforcement without prestressing:
straight bars lying in a row or a plane to
indicate the ends of the bars
ISO 3766
Reinforcement without prestressing: end
anchorage with plates: elevation or plan
view
ISO 3766
Reinforcement without prestressing: end
anchorage with plates: section or end view
ISO 3766
Reinforcement without prestressing: bar
bent at right angle way from viewer
ISO 3766
Reinforcement without prestressing: bar
bent at right angle way towards viewer
ISO 3766
Reinforcement without prestressing:
overlapping stack of reinforcement bars:
without marking bar ends by a slash or bar
marks
ISO 3766
Reinforcement without prestressing: over-
lapping stack of reinforcement bars: with
marking bar ends by a slash or bar marks
ISO 3766
ISO 7083:2021(E)
Table 16 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Reinforcement without prestressing: bars
joined by mechanical couplers — general
representation: tension coupler
ISO 3766
Reinforcement without prestressing: bars
joined by mechanical couplers — general
representation: compression coupler
ISO 3766
Reinforcement without prestressing: weld-
ed fabric, top view
ISO 3766
Reinforcement without prestressing: weld-
ed fabric, identical sheets in a row: with
representation of single sheets
ISO 3766
Reinforcement without prestressing:
welded fabric, identical sheets in a row:
condensed representation
ISO 3766
Reinforcement without prestressing: top
view of layer containing identical sheets:
with representation of single sheets
ISO 3766
Reinforcement without prestressing: top
view of layer containing identical sheets:
condensed representation with indication
of overlapping
ISO 3766
Reinforcement without prestressing: weld-
ed fabric, section: simplified representa-
tion
ISO 3766
Reinforcement without prestressing:
welded fabric, section: conventional rep-
resentation
ISO 3766
20 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 16 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Reinforcement without prestressing: set
of identical bars: each set of identical bars
indicated by one scaled-drawn reinforce-
ment bar and a line terminated by oblique
lines to mark extreme bars
ISO 3766
Reinforcement without prestressing: set
of identical bars: identical bars placed in
groups.
ISO 3766
Reinforcement without prestressing: bars
with a specification of the diameter or ra-
dius of mandrel, if differing from the mini-
mum diameter or radius of the mandrel
ISO 3766
Reinforcement without prestressing:
location of layers of reinforcement on plan
drawings: bottom and top layers shown on
separate plans
ISO 3766
Reinforcement without prestressing: loca-
tion of layers of reinforcement on elevation
drawings: bottom and top layers shown on
the same plane
ISO 3766
Reinforcement without prestressing: loca-
tion of layers of reinforcement on elevation
drawings: near-face and far-face reinforce-
ment shown on separate elevations
ISO 3766
Reinforcement without prestressing: loca-
tion of layers of reinforcement on elevation
drawings: near-face and far-face reinforce-
ment shown on the same elevation
ISO 3766
Reinforcement without prestressing: if the
arrangement of the reinforcement is not
represented unambiguously by the sec-
tion, an additional detailed representation
of the reinforcement may be given outside
of the section
ISO 3766
ISO 7083:2021(E)
Table 16 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Prestressed reinforcement: Prestressing
bar or cable
ISO 3766
Prestressed reinforcementsection of
post-tensioned reinforcement in pipes or
conduits
ISO 3766
Prestressed reinforcement: section of pre-
stressed reinforcement with immediate
bond
ISO 3766
Prestressed reinforcement: anchorage:
anchorage at tensioning end
ISO 3766
Prestressed reinforcement: anchorage:
fixed anchorage
ISO 3766
Prestressed reinforcement: anchorage:
end view of anchorage
ISO 3766
Prestressed reinforcement: coupling: mov-
able splice
ISO 3766
Prestressed reinforcement: coupling: fixed
splice
ISO 3766
Alphanumerical bar mark
ISO 3766
Position in the component or construction
part
(see ISO 3098-1)
ISO 3766
The symbols in ISO 3952-1:1981 are shown in Table 17.
Table 17 — ISO 3952-1:1981 and ISO 3952-1:1981/Amd 1:2002 symbols
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Pairs with one degree of freedom, revolute pair:
turning pair liaison pivot, for planar mechanism
ISO 3952-1:1981/Amd 1:2002
22 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 17 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
End effector; terminal
ISO 3952-1:1981/Amd 1:2002
Trace of motion – straight line motion
ISO 3952-1:1981/Amd 1:2002
Trace of motion – rotational motion
ISO 3952-1:1981/Amd 1:2002
Trace of motion –permissible symbol
ISO 3952-1
Direction of motion
ISO 3952-1
Instantaneous stop at intermediate position –
straight line motion
ISO 3952-1
Instantaneous stop at intermediate position – rota-
tional motion
ISO 3952-1
Dwell at intermediate position
ISO 3952-1
Dwell at extreme position
ISO 3952-1
Partial reverse motion – straight line motion
ISO 3952-1
Partial reverse motion – rotational motion
ISO 3952-1
Stop
ISO 3952-1
Pairs with one degree of freedom, revolute pair:
turning pair liaison pivot, for planar mechanism
ISO 3952-1
ISO 7083:2021(E)
Table 17 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Pairs with one degree of freedom, revolute pair:
turning pair liaison pivot, for spatial mechanism
ISO 3952-1
Pairs with one degree of freedom, revolute pair:
turning pair liaison pivot, permissible symbol
ISO 3952-1
Prismatic pair
ISO 3952-1
Prismatic pair – permissible symbol
ISO 3952-1
Prismatic pair – permissible symbol
ISO 3952-1
Prismatic pair – permissible symbol
ISO 3952-1
Screw pair; helical pair
ISO 3952-1
Screw pair; helical pair – permissible symbol
ISO 3952-1
Screw pair; helical pair
ISO 3952-1
Screw pair; helical pair – permissible symbol
ISO 3952-1
Pairs with two degrees of freedom; cylindrical pair
ISO 3952-1
Pairs with two degrees of freedom; cylindrical pair –
permissible symbol
ISO 3952-1
Spherical pair with pin
ISO 3952-1
24 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 17 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Pairs with three degrees of freedom; spherical pair
ISO 3952-1
Planar contact pair
ISO 3952-1
Pairs with four degrees of freedom; ball-and-cylin-
drical pair
ISO 3952-1
Pairs with five degrees of freedom; ball-and-plane
pair
ISO 3952-1
Frame
ISO 3952-1
Shaft; bar; axle
ISO 3952-1
Permanent connection of link components
ISO 3952-1
Permanent connection of link components – permis-
sible symbol
ISO 3952-1
Fixed connection of component to shaft (bar, axle)
ISO 3952-1
Fixed connection of component to shaft (bar, axle) –
permissible symbol
ISO 3952-1
Adjustable connection of link components – permis-
sible symbol
ISO 3952-1
Adjustable connection of link components – permis-
sible symbol
ISO 3952-1
Single-element link; the link is part of a revolute
pair; for planar mechanisms
ISO 3952-1
ISO 7083:2021(E)
Table 17 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Single-element link; the link is part of a revolute
pair; for spatial mechanisms
ISO 3952-1
Single-element link; the frame is part of a revolute
pair; for planar mechanisms
ISO 3952-1
Single-element link; the frame is part of a revolute
pair; for planar mechanisms – permissible symbol
ISO 3952-1
Single-element link; the frame is part of a revolute
pair; for spatial mechanisms
ISO 3952-1
Single-element link; the link is part of a prismatic
pair
ISO 3952-1
Single-element link; the link is part of a prismatic
pair – permissible symbol
ISO 3952-1
Single-element link; the link is part of a cylindrical
pair
ISO 3952-1
Single-element link; the link is part of a spherical
pair
ISO 3952-1
Double-element link (binary link); the link forms
the connection between revolute pairs; coupler
ISO 3952-1
26 © ISO 2021 – All rights reserved

ISO 7083:2021(E)
Table 17 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Double-element link (binary link); the link forms
the connection between revolute pairs; coupler; for
planar mechanisms
ISO 3952-1
Double-element link (binary link); the link forms
the connection between revolute pairs; coupler; for
spatial mechanisms
ISO 3952-1
Double-element link (binary link); the link forms
the connection between revolute pairs; crank (or
rocker); for planar mechanisms
ISO 3952-1
Double-element link (binary link); the link forms
the connection between revolute pairs; crank (or
rocker); for spatial mechanisms
ISO 3952-1
Double-element link (binary link); the link forms
the connection between revolute pairs; eccentric
ISO 3952-1
Double-element link (binary link); the link forms
the connection between two prismatic pairs
ISO 3952-1
Double-element link (binary link); the link forms
the connection between two prismatic pairs; com-
mon case
ISO 3952-1
ISO 7083:2021(E)
Table 17 (continued)
ISO
Symbol name or description
No. reg. Symbol
Standards symbol used in
no.
Double-element link (bina
...