ISO 1502:1996
(Main)ISO general-purpose metric screw threads — Gauges and gauging
ISO general-purpose metric screw threads — Gauges and gauging
Gives details for the manufacture and use of gauges for checking ISO general purpose metric screw threads. Specifies the features of gauges which are recommended for checking external and internal screw threads of workpieces. Provides means of distinguishing between threads that comply with the limits of size and those that do not.
Filetages métriques ISO pour usages généraux — Calibres à limites et vérification
Metrski navoj ISO za splošno uporabo - Mere in merjenje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-avgust-1998
Metrski navoj ISO za splošno uporabo - Mere in merjenje
ISO general-purpose metric screw threads -- Gauges and gauging
Filetages métriques ISO pour usages généraux -- Calibres à limites et vérification
Ta slovenski standard je istoveten z: ISO 1502:1996
ICS:
17.040.30 Merila Measuring instruments
21.040.10 Metrski navoji Metric screw threads
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ”
STANDARD
Second edition
1996-02-O I
IS0 general-purpose metric screw
- Gauges and gauging
threads
Filetages m&riques IS0 pour usages ghhraux - Calibres 9 limites et
vkifica tion
Reference number
IS0 1502:1996(E)
IS0 1502:1996(E)
Contents
Page
. . . . . . . . . . . . . . . . . . . . . 1
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Symbols and abbreviations
4 Types of gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Gauges for external threads of workpieces and their check plugs
and setting plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
.2 Gauges for internal threads of workpieces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
.............................................. ............... 3
5 Gauging of workpieces
.......
5.1 Gauging of external threads . 3
5.2 Gauging of internal threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Inspection gauging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
...................................................... ....... 4
6 Reference temperature
..................................... 4
7 Function, checking and use of gauges
7.1 Gauges for external threads of workpieces and their check plugs
and setting plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
................ ............ 8
7.2 Gauges for internal threads of workpieces
8 Tolerance zones for the diameters of gauges (see figures 1 and
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2)
. . . . . . . . . 11
9 Tolerance zones for plain gauges (see figures 3 and 4)
10 Thread profiles for gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 13
10.1 Profiles with complete flanks (see figures 5 and 6) . . . . . . . . . . 13
. . . . . . . . . . 16
10.2 Profiles with truncated flanks (see figures 7 and 8)
10.3 Displacement of the clearance groove for a profile with truncated
flanks ,.~.,. 18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11 General features of screw gauges
. . . . . . . . . . . . . . . . . . . . . . . 19
11.1 Gauges for external threads of workpieces
II.2 Gauges for internal threads of workpieces . . . . . . . . . . . . . . . . . . . . . . . . 19
0 IS0 1996
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 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
0 IS0 IS0 1502:1996(E)
II.3 Blunt start of thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Tolerances and permissible wear for pitch diameters of gauges
I2
....................................... ........ .................. 21
(see tables 4 to 9)
13 Formulae for calculation of gauge limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
13.1 Screw gauges for external threads of workpieces . .*. 23
13.2 Plain gauges for the major diameters of external threads of
.................................. .............................. .........
workpieces 23
13.3 Screw gauges for internal threads of workpieces . . . . . . . . . . . . . 23
13.4 Plain gauges for the minor diameters of internal threads of
workpieces . . . 23
Annex
A Bibliography . . . 27
0 IS0
IS0 1502:1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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. IS0
collaborates closely with the International Electrotechnical Commission
(I EC) 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 IS0 1502 was prepared by Technical Committee
ISO/TC I, Screw threads, Subcommittee SC 4, Verification.
This second edition cancels and replaces the first edition
(IS0 1502:1978), which has been technically revised.
Annex A of this International Standard is for information only.
INTERNATIONAL STANDARD 0 IS0 IS0 1502:1996(E)
IS0 general-purpose metric screw threads - Gauges
and gauging
eter and virtual pitch diameter) lies inside the
1 Scope
specified limits.
In order to satisfy these two principles, this Inter-
This International Standard gives details for the
national Standard establishes requisite types and
manufacture and use of gauges for checking IS0
sizes of gauges for checking screw threads, the con-
general-purpose metric screw threads with a basic
ditions under which these gauges are to be used, and
profile in accordance with IS0 68.
rules for the inspection of the workpiece threads.
It specifies the features of the types of gauges (listed
in 4.1 and 4.2) which are recommended for checking
2 Normative references
external and internal screw threads of workpieces and
The following standards contain provisions which,
for the setting and checking of certain of the screw
gauges. through reference in this text, constitute provisions
of this International Standard. At the time of publi-
cation, the editions indicated were valid. All standards
It is recognized that other methods of checking may
are subject to revision, and parties to agreements
be used, for example measurements with indicating
based on this International Standard are encouraged
instruments. Checking with gauges in accordance
to investigate the possibility of applying the most re-
with this International Standard is always decisive.
cent editions of the standards indicated below.
The aim of this International Standard is to provide Members of IEC and IS0 maintain registers of cur-
rently valid International Standards.
means of distinguishing between workpiece threads
that comply with the limits of size and those that do
IS0 1: 1975, Standard reference temperature for in-
not.
dustrial length measurements.
In order to ensure the interchangeability of workpiece
I so 68:--J, IS0 general-purpose screw threads -
threads and to avoid disputes between the manufac-
Basic profile.
turer and purchaser, the following principles should
be applied:
IS0 1938-l :-*I, Inspection of plain workpieces -
Part 1: Plain limit gauges.
a) the manufacturer should not deliver any work-
piece thread whose actual thread size (e.g. pitch
diameter and virtual pitch diameter) lies outside
3 Symbols and abbreviations
the specified limits;
The symbols and abbreviations used in the text and
b) the purchaser should not reject any workpiece figures in this International Standard are listed in
thread whose actual thread size (e.g. pitch diam-
table 1.
1) To be published. (Revision of IS0 68:1973)
2) To be published.
IS0 1502:1996(E)
Table 1 - Symbols and abbreviations
Symbol Symbol
or or
Definition Definition
abbrevi- abbrevi-
ation ation
Width of the clearance groove at the major Radius of the clearance groove of the root
4 r2
profile of GO and NOT GO screw plug gauges
diameter of a gauge thread profile with com-
plete flanks
S Displacement of the clearance groove from
Width of the clearance groove at the minor the centre of a thread profile with truncated
h2
diameter of a gauge thread profile with com- flanks
plete flanks
Tolerance for each flank angle of a profile with
T,,l2
Width of the clearance groove at the major complete flanks
and minor diameter, respectively, of a gauge
Tolerance for each flank angle of a profile with
T,2/2
thread profile with truncated flanks
truncated flanks
Basic major diameter of a workpiece thread
d, D
Tolerance on the pitch diameter of GO and
CP
Basic minor diameter of the internal thread of NOT GO screw check plugs, wear check plugs
a workpiece and setting plugs
Basic pitch diameter of a workpiece thread Tolerance for the major diameter of the
Td
4 D2
external thread of a workpiece
es Fundamental deviation of the external thread
of a workpiece (it is zero for tolerance position T Tolerance for the pitch diameter of the
d2
h) external thread of a workpiece
EI Fundamental deviation of the internal thread T Tolerance for the minor diameter of the
Dl
of a workpiece (it is zero for tolerance position internal thread of a workpiece
HI
T Tolerance for the pitch diameter of the internal
For thread profiles with truncated flanks, the thread of a workpiece
Fl
radial distance between the pitch diameter
Tolerance for the pitch of a gauge thread
TP
line and the end of the straight part of the
flank in the direction of the crest Tolerance for the pitch diameter of GO and
TPL
NOT GO screw plug gauges
For thread profiles with truncated flanks, the
radial distance between the pitch diameter Tolerance for the pitch diameter of GO and
TR
line and the end of the straight part of the NOT GO screw ring gauges
flank in the direction of the root
Amount available for permissible wear of GO
wGO
screw plug gauges and GO screw ring gauges
H Height of the triangle of a thread profile
Tolerance on the diameter of plain plug Amount available for permissible wear of
4 WNG
gauges NOT GO screw plug gauges and NOT GO
screw ring gauges
Tolerance on plain ring gauges and the separ-
H2
ation of the plain faces of calliper gauges Distance between the middle of the tolerance
zone H, of a GO plug gauge and the lower
Tolerance on the size of check plug gauges for
HP
limit of the minor diameter of a workpiece
plain calliper gauges
Distance between the middle of the tolerance
LML Least material limit
zone H2 of a GO calliper gauge or a GO ring
gauge and the upper limit of the major diam-
m Distance between the middle of the tolerance
zones TR of a screw ring gauge and Tcp of a eter of a workpiece
GO check plug
Distance between the middle of the tolerance
ZPL
MML Maximum material limit zone TpL of a GO screw plug gauge and the
lower limit of a workpiece thread
P Pitch
Distance between the middle of the tolerance
Radius of the clearance groove of the root
Yl
zone TR of a GO screw ring gauge and the
profile of GO and NOT GO screw ring gauges
upper limit of a workpiece thread
or of GO and NOT GO screw calliper gauges
0 IS0 IS0 1502:1996(E)
4.2 Gauges for internal threads of
4 Types of gauges
workpieces
The following types are recommended:
- GO screw plug gauges;
4.1 Gauges for external threads of - NOT GO screw plug gauges;
workpieces and their check plugs and setting
- plain GO plug gauges;
PUF
- plain NOT GO plug gauges.
The following types are recommended:
solid GO screw ring gauges;
5 Gauging of workpieces
adjustable GO screw ring gauges;
It is not necessary to use all the gauges mentioned in
clause 4. However, in gauging the limits (checking
check plugs (GO and NOT GO) for new solid GO
that the tolerances have been respected), it is essen-
screw ring gauges;
tial that a GO and NOT GO gauging always be carried
out with one of the GO screw gauges and one of the
setting plugs for adjustable GO screw ring gauges;
NOT GO screw gauges referred to in 4.1 and 4.2.
wear check plugs for solid or adjustable GO screw
5.1 Gauging of external threads
ring gauges;
Preferably a solid or adjustable GO screw ring gauge
GO screw calliper gauges;
should be used for gauging an external thread.
setting plugs for GO screw calliper gauges;
To save time, for convenience in checking, or in cases
where a GO screw ring gauge is not applicable, a GO
NOT GO screw calliper gauges;
screw calliper gauge may be used.
setting plugs for NOT GO screw calliper gauges;
It is, however, recommended that gauging with GO
screw calliper gauges should be supplemented by
solid NOT GO screw ring gauges;
random sampling with a GO screw ring gauge, so that
when a large number of parts are checked with a GO
adjustable NOT GO screw ring gauges;
screw calliper gauge, a certain percentage receives
an additional check with a GO screw ring gauge, thus
check plugs (GO and NOT GO) for new solid NOT
giving greater assurance of interchangeability be-
GO screw ring gauges;
tween the workpiece threads.
setting plugs for adjustable NOT GO screw ring
...
INTERNATIONAL ”
STANDARD
Second edition
1996-02-O I
IS0 general-purpose metric screw
- Gauges and gauging
threads
Filetages m&riques IS0 pour usages ghhraux - Calibres 9 limites et
vkifica tion
Reference number
IS0 1502:1996(E)
IS0 1502:1996(E)
Contents
Page
. . . . . . . . . . . . . . . . . . . . . 1
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Symbols and abbreviations
4 Types of gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Gauges for external threads of workpieces and their check plugs
and setting plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
.2 Gauges for internal threads of workpieces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
.............................................. ............... 3
5 Gauging of workpieces
.......
5.1 Gauging of external threads . 3
5.2 Gauging of internal threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Inspection gauging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
...................................................... ....... 4
6 Reference temperature
..................................... 4
7 Function, checking and use of gauges
7.1 Gauges for external threads of workpieces and their check plugs
and setting plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
................ ............ 8
7.2 Gauges for internal threads of workpieces
8 Tolerance zones for the diameters of gauges (see figures 1 and
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2)
. . . . . . . . . 11
9 Tolerance zones for plain gauges (see figures 3 and 4)
10 Thread profiles for gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 13
10.1 Profiles with complete flanks (see figures 5 and 6) . . . . . . . . . . 13
. . . . . . . . . . 16
10.2 Profiles with truncated flanks (see figures 7 and 8)
10.3 Displacement of the clearance groove for a profile with truncated
flanks ,.~.,. 18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11 General features of screw gauges
. . . . . . . . . . . . . . . . . . . . . . . 19
11.1 Gauges for external threads of workpieces
II.2 Gauges for internal threads of workpieces . . . . . . . . . . . . . . . . . . . . . . . . 19
0 IS0 1996
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 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
0 IS0 IS0 1502:1996(E)
II.3 Blunt start of thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Tolerances and permissible wear for pitch diameters of gauges
I2
....................................... ........ .................. 21
(see tables 4 to 9)
13 Formulae for calculation of gauge limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
13.1 Screw gauges for external threads of workpieces . .*. 23
13.2 Plain gauges for the major diameters of external threads of
.................................. .............................. .........
workpieces 23
13.3 Screw gauges for internal threads of workpieces . . . . . . . . . . . . . 23
13.4 Plain gauges for the minor diameters of internal threads of
workpieces . . . 23
Annex
A Bibliography . . . 27
0 IS0
IS0 1502:1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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. IS0
collaborates closely with the International Electrotechnical Commission
(I EC) 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 IS0 1502 was prepared by Technical Committee
ISO/TC I, Screw threads, Subcommittee SC 4, Verification.
This second edition cancels and replaces the first edition
(IS0 1502:1978), which has been technically revised.
Annex A of this International Standard is for information only.
INTERNATIONAL STANDARD 0 IS0 IS0 1502:1996(E)
IS0 general-purpose metric screw threads - Gauges
and gauging
eter and virtual pitch diameter) lies inside the
1 Scope
specified limits.
In order to satisfy these two principles, this Inter-
This International Standard gives details for the
national Standard establishes requisite types and
manufacture and use of gauges for checking IS0
sizes of gauges for checking screw threads, the con-
general-purpose metric screw threads with a basic
ditions under which these gauges are to be used, and
profile in accordance with IS0 68.
rules for the inspection of the workpiece threads.
It specifies the features of the types of gauges (listed
in 4.1 and 4.2) which are recommended for checking
2 Normative references
external and internal screw threads of workpieces and
The following standards contain provisions which,
for the setting and checking of certain of the screw
gauges. through reference in this text, constitute provisions
of this International Standard. At the time of publi-
cation, the editions indicated were valid. All standards
It is recognized that other methods of checking may
are subject to revision, and parties to agreements
be used, for example measurements with indicating
based on this International Standard are encouraged
instruments. Checking with gauges in accordance
to investigate the possibility of applying the most re-
with this International Standard is always decisive.
cent editions of the standards indicated below.
The aim of this International Standard is to provide Members of IEC and IS0 maintain registers of cur-
rently valid International Standards.
means of distinguishing between workpiece threads
that comply with the limits of size and those that do
IS0 1: 1975, Standard reference temperature for in-
not.
dustrial length measurements.
In order to ensure the interchangeability of workpiece
I so 68:--J, IS0 general-purpose screw threads -
threads and to avoid disputes between the manufac-
Basic profile.
turer and purchaser, the following principles should
be applied:
IS0 1938-l :-*I, Inspection of plain workpieces -
Part 1: Plain limit gauges.
a) the manufacturer should not deliver any work-
piece thread whose actual thread size (e.g. pitch
diameter and virtual pitch diameter) lies outside
3 Symbols and abbreviations
the specified limits;
The symbols and abbreviations used in the text and
b) the purchaser should not reject any workpiece figures in this International Standard are listed in
thread whose actual thread size (e.g. pitch diam-
table 1.
1) To be published. (Revision of IS0 68:1973)
2) To be published.
IS0 1502:1996(E)
Table 1 - Symbols and abbreviations
Symbol Symbol
or or
Definition Definition
abbrevi- abbrevi-
ation ation
Width of the clearance groove at the major Radius of the clearance groove of the root
4 r2
profile of GO and NOT GO screw plug gauges
diameter of a gauge thread profile with com-
plete flanks
S Displacement of the clearance groove from
Width of the clearance groove at the minor the centre of a thread profile with truncated
h2
diameter of a gauge thread profile with com- flanks
plete flanks
Tolerance for each flank angle of a profile with
T,,l2
Width of the clearance groove at the major complete flanks
and minor diameter, respectively, of a gauge
Tolerance for each flank angle of a profile with
T,2/2
thread profile with truncated flanks
truncated flanks
Basic major diameter of a workpiece thread
d, D
Tolerance on the pitch diameter of GO and
CP
Basic minor diameter of the internal thread of NOT GO screw check plugs, wear check plugs
a workpiece and setting plugs
Basic pitch diameter of a workpiece thread Tolerance for the major diameter of the
Td
4 D2
external thread of a workpiece
es Fundamental deviation of the external thread
of a workpiece (it is zero for tolerance position T Tolerance for the pitch diameter of the
d2
h) external thread of a workpiece
EI Fundamental deviation of the internal thread T Tolerance for the minor diameter of the
Dl
of a workpiece (it is zero for tolerance position internal thread of a workpiece
HI
T Tolerance for the pitch diameter of the internal
For thread profiles with truncated flanks, the thread of a workpiece
Fl
radial distance between the pitch diameter
Tolerance for the pitch of a gauge thread
TP
line and the end of the straight part of the
flank in the direction of the crest Tolerance for the pitch diameter of GO and
TPL
NOT GO screw plug gauges
For thread profiles with truncated flanks, the
radial distance between the pitch diameter Tolerance for the pitch diameter of GO and
TR
line and the end of the straight part of the NOT GO screw ring gauges
flank in the direction of the root
Amount available for permissible wear of GO
wGO
screw plug gauges and GO screw ring gauges
H Height of the triangle of a thread profile
Tolerance on the diameter of plain plug Amount available for permissible wear of
4 WNG
gauges NOT GO screw plug gauges and NOT GO
screw ring gauges
Tolerance on plain ring gauges and the separ-
H2
ation of the plain faces of calliper gauges Distance between the middle of the tolerance
zone H, of a GO plug gauge and the lower
Tolerance on the size of check plug gauges for
HP
limit of the minor diameter of a workpiece
plain calliper gauges
Distance between the middle of the tolerance
LML Least material limit
zone H2 of a GO calliper gauge or a GO ring
gauge and the upper limit of the major diam-
m Distance between the middle of the tolerance
zones TR of a screw ring gauge and Tcp of a eter of a workpiece
GO check plug
Distance between the middle of the tolerance
ZPL
MML Maximum material limit zone TpL of a GO screw plug gauge and the
lower limit of a workpiece thread
P Pitch
Distance between the middle of the tolerance
Radius of the clearance groove of the root
Yl
zone TR of a GO screw ring gauge and the
profile of GO and NOT GO screw ring gauges
upper limit of a workpiece thread
or of GO and NOT GO screw calliper gauges
0 IS0 IS0 1502:1996(E)
4.2 Gauges for internal threads of
4 Types of gauges
workpieces
The following types are recommended:
- GO screw plug gauges;
4.1 Gauges for external threads of - NOT GO screw plug gauges;
workpieces and their check plugs and setting
- plain GO plug gauges;
PUF
- plain NOT GO plug gauges.
The following types are recommended:
solid GO screw ring gauges;
5 Gauging of workpieces
adjustable GO screw ring gauges;
It is not necessary to use all the gauges mentioned in
clause 4. However, in gauging the limits (checking
check plugs (GO and NOT GO) for new solid GO
that the tolerances have been respected), it is essen-
screw ring gauges;
tial that a GO and NOT GO gauging always be carried
out with one of the GO screw gauges and one of the
setting plugs for adjustable GO screw ring gauges;
NOT GO screw gauges referred to in 4.1 and 4.2.
wear check plugs for solid or adjustable GO screw
5.1 Gauging of external threads
ring gauges;
Preferably a solid or adjustable GO screw ring gauge
GO screw calliper gauges;
should be used for gauging an external thread.
setting plugs for GO screw calliper gauges;
To save time, for convenience in checking, or in cases
where a GO screw ring gauge is not applicable, a GO
NOT GO screw calliper gauges;
screw calliper gauge may be used.
setting plugs for NOT GO screw calliper gauges;
It is, however, recommended that gauging with GO
screw calliper gauges should be supplemented by
solid NOT GO screw ring gauges;
random sampling with a GO screw ring gauge, so that
when a large number of parts are checked with a GO
adjustable NOT GO screw ring gauges;
screw calliper gauge, a certain percentage receives
an additional check with a GO screw ring gauge, thus
check plugs (GO and NOT GO) for new solid NOT
giving greater assurance of interchangeability be-
GO screw ring gauges;
tween the workpiece threads.
setting plugs for adjustable NOT GO screw ring
A GO screw calliper gauge should not be used if the
gauges;
manufacturing process is likely to cause deviations in
the workpiece thread, which this gauge is not certain
wear check plugs for solid or adjustable NOT GO
to detect, for example local pitch errors in milled
screw ring gauges;
threads or burrs at the start of the thread. Further-
more, a GO screw calliper gauge is not suitable for
plain GO ring gauges;
checking non-rigid parts, for example thin-walled parts
which would be deformed by this gauge. In these
plain GO calliper gauges;
cases, checking should be carried out w
...
NORME IS0
INTERNATIONALE 1502
Deuxieme bdition
1996-02-o 1
Filetages mktriques IS0 pour usages
ghhraux - Calibres & limites et
verification
IS0 general-purpose metric screw threads - Gauges and gauging
Vumkro de rkfkrence
IS0 1502:1996(F)
IS0 1502:1996(F)
Sommaire
Page
1 Domaine d ’application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
2 Rkfkrences normatives . . . . . . . . . . . . . . . . . . .
........................... 2
.............................. II ...
3 Symboles et abrhiations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Types de calibres
4.1 Calibres pour filetages exth-ieurs de pikes et leurs tampons
............................. 3
rapporteurs et tampons de rbf&ence .
4.2 Calibres pour filetages inthieurs de pikes . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5 V&ification de pikes
.......... ............................... 3
5.1 V&ification de filetages exth-ieurs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.2 Wrification de filetages inthieurs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 4
5.3 Rkception par calibrage
6 Tempitrature de rkfhence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7 Fonction, vkification et emploi des calibres . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.1 Calibres pour filetages extbrieurs de pikes et leurs tampons
. . . . . . . . . . . . . . . . . . . . . . . . .*. 5
rapporteurs et tampons de rkfi!rence . .
7.2 Calibres pour filetages intkrieurs de pi&es . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8 Zones de tokrances pour le diamGtre sur flancs des calibres filet&
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
(voir figures 1 et 2)
9 Zones de tokrances pour calibres lisses (voir figures 3 et 4) 12
IO Profils des filetages de calibres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10.1 Profils avec flancs complets (voir figures 5 et 6) . . . . . . . . . . . . . . . 14
IO.2 Profils avec flancs raccourcis (voir figures 7 et 8) . . . . . . . . . . . . . 17
IO.3 Deport de la piqOre pour le profil A flancs raccourcis . . . . . . . . 19
11 Caracthistiques g&kales des calibres filet& . 21
11 .I Calibres pour filetages extkieurs de pikes . 21
11.2 Calibres pour filetages interieurs de pi&es . . . . . . . . . . . . . . . . . . . . . . . 21
o IS0 1996
Droits de reproduction r&se&s. Sauf prescription diffkente, aucune partie de cette publi-
cation ne peut &re reproduite ni utilisee sous quelque forme que ce soit et par aucun pro-
&d& blectronique ou mkcanique, y compris la photocopie et les mlcrofilms, sans l ’accord
&-it de Mditeur.
Organisation internationale de normalisation
Case Postale 56 l CH-1211 Gerkve 20 l Suisse
lmprimb en Suisse
ii
0 IS0 IS0 1502:1996(F)
11.3 Entree du filetage . . . 21
12 Tolerances et usure admissible pour les diametres sur flancs des
calibres (voir tableaux 4 a 9) . 23
13 Formules pour le calcul des limites de calibres . 25
13.1 Calibres filet& pour filetages exterieurs . 25
13.2 Calibres lisses pour les diametres exterieurs des filetages
exterieurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
13.3 Calibres filet& pour filetages interieurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
13.4 Calibres lisses pour les diametres interieurs des filetages
interieurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Annexe
A Bibliographie .
........................... 29
. . .
III
0 is0
IS0 1502:1996(F)
Avant-propos
L ’ISO (Organisation internationale de normalisation) est une federation
mondiale d ’organismes nationaux de normalisation (comites membres de
I’ISO). L ’elaboration des Normes internationales est en general confiee aux
comites techniques de I’ISO. Chaque comite membre inter-es& par une
etude a le droit de faire partie du comite technique tree a cet effet. Les
organisations internationales, gouvernementales et non gouvernemen-
tales, en liaison avec I’ISO participent egalement aux travaux. L ’ISO colla-
bore etroitement avec la Commission electrotechnique internationale (CEI)
en ce qui concerne la normalisation electrotechnique.
Les projets de Normes internationales adopt& par les comites techniques
sont soumis aux comites membres pour vote. Leur publication comme
Normes internationales requiert I’approbation de 75 % au moins des co-
mites membres votants.
La Norme internationale IS0 1502 a ete elaboree par le comite technique
lSO/TC 1, filetages, sous-comite SC 4, V&ification.
Cette deuxieme edition annule et remplace la premiere edition
(IS0 1502:1978), dont elle constitue une revision technique.
L ’annexe A de la presente Norme internationale est donnee uniquement
a titre d ’information.
iv
IS0 1502:1996(F)
NORME INTERNATIONALE 0 IS0
Filetages mbtriques IS0 pour usages gbnkraux -
Calibres & limites et verification
diametre sur flancs et le diametre virtue1 sur
1 Domaine d ’application
flancs) se trouvent a I’interieur des Iimites fixees.
La presente Norme internationale fournit les indica-
En vue de respecter ces deux principes, la presente
tions necessaires a la fabrication et a I’emploi de cali-
Norme internationale specific les types et les dimen-
bres pour le controle des filetages metriques IS0 pour
sions de calibres necessaires a la verification des
usages generaux dont le profil de base est conforme
filetages, les conditions d ’utilisation de ces calibres
il I’ISO 68.
et les regles applicables a I’inspection des filetages
de pieces.
Elle prescrit les caracteristiques essentielles des cali-
4.1 et 4.2 qui sont recommandes pour
bres list& en
le controle des pieces filetees interieurement et ex-
terieurement et pour l’ajustage et le controle de cer-
tains calibres filet&.
2 Rbfbrences normatives
D ’autres methodes de verification peuvent natu-
rellement etre adoptees, par exemple le mesurage au
Les normes suivantes contiennent des dispositions
moyen d ’appareils de mesure a lecture. La verification
qui, par suite de la reference qui en est faite, consti-
au moyen des calibres recommandes dans la pre- tuent des dispositions valables pour la presente
sente Norme internationale est cependant toujours Norme internationale. Au moment de la publication,
determinante. les editions indiquees etaient en vigueur. Toute
norme est sujette a revision et les parties prenantes
La presente Norme internationale fournit les moyens des accords fond& sur la presente Norme internatio-
propres a differencier les filetages restant dans les
nale sont invitees a rechercher la possibilite d ’appli-
Iimites de tolerances de ceux qui se situent hors de
quer les editions les plus recentes des normes
ces Iimites. indiquees ci-apres. Les membres de la CEI et de I’ISO
possedent le registre des Normes internationales en
Dans le but d ’assurer I’interchangeabiliti des filetages
vigueur a un moment donne.
de pieces et pour eviter tout litige entre le fabricant
et l’acheteur, il convient d ’observer les principes sui- IS0 1 :I 975, Temphature normale de kfkrence des
mesures industrielles de longueur.
vants:
IS0 68: -I), Filetages IS0 pour usages g&Graux -
a) que le fabricant ne fournisse aucune piece dont
les dimensions effectives de filetage (par exemple Profil de base.
le diametre sur flancs et le diametre virtue1 sur
IS0 1938-l : -*I, Vhification des pikes lisses - Par-
flancs) se trouvent hors des limites fixees;
tie 7: Calibres P limites, lisses (Avec /es Normes IS0
b) que I’acheteur ne refuse aucune piece dont les 7938-2 et IS0 7938-3, hision de /‘/SO/R
dimensions effectives de filetage (par exemple le 7938: 1971).
1) A publier. (Rbvision de I ’ISO 68:1973)
2) k publier.
0 IS0
IS0 1502:1996(F)
prksente Norme internationale sont i3num&-6s dans le
3 Symboles et abrhiations
tableau 1.
Les symboles et abrhiations mentionnhs dans la
Tableau 1 - Symboles et abrhiations
Symbole
Symbole
Dbfinition ou Dbfinition
ou
abrhiation
abrhiation
Largeur de la piqure au diametre exterieur du Rayon de la piqljre de fond de profil des bagues
filetees ENTRE et N ’ENTRE PAS ou des
profil du calibre avec flancs complets
calibres-machoires filet& ENTRE et N ’ENTRE
Largeur de la piqljre au diametre interieur du
PAS
profil du calibre avec flancs complets
Deport de la piqljre avec flancs raccourcis
S
Largeur de la piqure au diametre exterieur et
interteur, respectivement du profil du calibre
Tolerance sur chaque inclinaison de flanc des
To,, 12
avec flancs raccourcis
profils avec flancs complets
Diametre exterieur de base du filetage de la
Tolerance sur chaque inclinaison de flanc des
C2l2
d, D
piece
profils avec flancs raccourcis
Diametre interieur de base du filetage interieur
Tolerance pour le diametre sur flancs de tam-
CP
de la piece
pons rapporteurs ENTRE et N ’ENTRE PAS, et
de temorns d ’usure et tampons de reference
Diametre sur flancs de base du filetage de la
4 D2
piece
Tolerance pour le diametre exterieur du filetage
exterieur de la piece
kart fondamental du filetage exterieur de la
es
piece (pour la position de tolerance h, l ’ecart
Tolerance pour le diametre sur flancs du filetage
T
d2
fondamental es est egal a zero)
exterieur de la piece
kart fondamental du filetage interieur de la
EI Tolerance pour le diametre interieur du filetage
T
Dl
piece (pour la position de tolerance H, I ’ecart
interieur de la piece
fondamental El est egal a zero)
Tolerance pour le diametre sur flancs du filetage
T
Pour les profils avec flancs raccourcis, distance
interieur de la piece
Fl
radiale entre la ligne primitive et la fin de la par-
Tolerance pour le pas du filetage de calibre
tie droite du flanc en direction du sommet TP
Tolerance pour le diametre sur flancs de tam-
Pour les profils avec flancs raccourcis, distance
TPL
pons filet& ENTRE et N ’ENTRE PAS
radiale entre la ligne primitive et la fin de la par-
tie droite du flanc en direction du fond
Tolerance pour le diametre sur flancs de bagues
filetees ENTRE et N ’ENTRE PAS
Hauteur du triangle du profil du filetage
H
Valeur moyenne representant I ’usure admissible
Tolerance sur le diametre pour tampons lisses wGO
du tampon filete ENTRE et de la bague filetee
Tolerance pour calibres-machoires lisses et ENTRE
H2
bagues lisses
Valeur moyenne representant l ’usure admissible
WNG
Tolerance pour tampons rapporteurs pour du tampon filete N ’ENTRE PAS et de la bague
HP
calibres-machoires lisses filetee N ’ENTRE PAS
Limite au minimum de mat&e Distance du centre de la zone de tolerance if,
LML
du tampon ENTRE a la Iimite inferieure du dia-
Distance entre le centre des zones de tolerance
nz
metre interieur de la piece
TR de la bague filetee et Tcp du tampon rappor-
Distance du centre de la zone de tolerance tf,
teur ENTRE
du calibre-machoire ENTRE, ou de la bague
Limite au maximum de matiere
MML
ENTRE, a la Iimite superieure du diametre ex-
terieur de la piece
Pas
P
Distance du centre de la zone de tolerance &,
ZPL
Rayon de la piqljre de fond de profil des tam-
?
du tampon filete ENTRE a la tote Iimite infe-
pons filet& ENTRE et N ’ENTRE PAS
rieure du filetage de la piece
Distance du centre de la zone de tolerance r,
de la bague filetee ENTRE a la tote Iimite su-
perieure du filetage de la piece
0 IS0
IS0 1502:1996(F)
- temoin d ’usure pour calibre-machoires lisse
4 Types de calibres
ENTRE.
4.2 Calibres pour filetages intkrieurs de
4.1 Calibres pour filetages extkrieurs de
pikes
pikes et leurs tampons rapporteurs et
tampons de r6fhence
Les types suivants sont recommandes:
Les types suivants sont recommandes:
- tampon filete ENTRE;
- bague filetee ENTRE fixe;
- tampon filete N ’ENTRE PAS;
- bague filetee ENTRE reglable;
- tampon lisse ENTRE;
- tampons rapporteurs ENTRE et N ’ENTRE PAS
- tampon lisse N ’ENTRE PAS.
pour bague filetee ENTRE fixe, neuve;
- tampon de reference pour bague filetee ENTRE
5 Vkification de pikes
regla ble;
II n ’est pas necessaire d ’utiliser, a I ’atelier ou au de-
- temoin d ’usure pour bague filetee ENTRE fixe ou partement de controle, tous les calibres mentionnes
reglable; a I ’article 3. Toutefois, pour la verification des Iimites
(controle du respect des tolerances), il est necessaire
- calibre-machoires filete ENTRE;
d ’effectuer une verification ENTRE avec l ’un des cali-
bres ENTRE et une verification N ’ENTRE PAS avec
tampon de reference pour calibre-machoires filete
I ’un des calibres N ’ENTRE PAS, mentionnes en 4.1
ENTRE;
et 4.2.
calibre-machoires filete N ’ENTRE PAS;
5.1 Vkification de filetages extkrieurs
tampon de reference pour calibre-machoires filete
II convient d ’utiliser, de preference, une bague filetee
N ’ENTRE PAS;
ENTRE, fixe ou reglable, pour verifier un filetage ex-
terieur.
bague filetee N ’ENTRE PAS fixe;
En vue de reduire le temps consacre au controle ou
bague filetee N ’ENTRE PAS reglable;
lorsque la bague filetee ENTRE ne peut etre utilisee,
il est possible de se servir d ’un calibre-machoires fi-
tampons rapporteurs ENTRE et N ’ENTRE PAS
lete ENTRE.
pour bague filetee N ’ENTRE PAS fixe, neuve;
Toutefois, il est recommande de completer une veri-
tampon de reference pour bague filetee N ’ENTRE
fication effect&e au moyen de calibres-machoires fi-
PAS reglable;
let& ENTRE par un prelevement d ’echantillons au
hasard au moyen de la bague filetee ENTRE, afin que,
temoin d ’usure pour bague filetee N ’ENTRE PAS
lorsqu ’un grand nomb
...
Questions, Comments and Discussion
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