EN 20286-2:1993

SLOVENSKI STANDARD
01-december-2000
ISO system of limits and fits - Part 2: Tables of standard tolerance grades and limit
deviations for holes and shafts (ISO 286-2:1988)
ISO system of limits and fits - Part 2: Tables of standard tolerance grades and limit
deviations for holes and shafts (ISO 286-2:1988)
ISO-System für Grenzabmaße und Passungen - Teil 2: Tabellen der Grundtoleranzgrade
und Grenzabmaße für Bohrungen und Wellen (ISO 286-2:1988)
Systeme ISO de tolérances et d'ajustements - Partie 2: Tables des degrés de tolérance
normalisés et des écarts limites des alésages et des arbres (ISO 286-2:1988)
Ta slovenski standard je istoveten z: EN 20286-2:1993
ICS:
17.040.10 Tolerance in ujemi Limits and fits
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

IS0
INTERNATIONAL STANDARD
286-2
First edition
1988-06-01
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE DE NORMALISATION
MEXAYHAPOAHAR OPTAHM3A~Mfl IlO CTAHJJAPTM3A~MM
IS0 system of limits and fits -
Part 2:
Tables of standard tolerance grades and limit deviations
for holes and shafts
Systkne IS0 de tohances et d’ajustements -
Partie 2: Tables des degr& de tolhance normalis& et des &carts limites des al&ages
et des arbres
Reference number
IS0 286-2: 1988 (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, govern-
mental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
This part of IS0 286 has been prepared by ISO/TC 3, Limits and fits, and, together
with IS0 286-1, completes the revision of ISO/R 286, IS0 system of limits and fits.
ISO/R 286 was first published in 1962 and subsequently confirmed in November 1964;
it was based on ISA Bulletin 25 first published in 1940.
The major changes incorporated in this part of IS0 286 are as follows:
a) The presentation of the information has been modified so that IS0 286 can be
used directly in both the design office and the workshop. This has been achieved by
separating the material dealing with the bases of the system, and the calculated
values of standard tolerances and fundamental deviations, from the tables giving
specific limits of the most commonly used tolerances and deviations.
b) The new symbols js and JS replace the former symbols js and Js (i.e. s and S
are no longer placed as subscripts) to facilitate the use of the symbols on equipment
with limited character sets, e.g. computer graphics. The letters “s” and “S” stand
for “symmetrical deviation”.
c) Limit deviations have been included for basic sizes from 500 to 3 150 mm as
standard requirements (these were previously included on an experimental basis
only).
d) Limit deviations have been extended for holes H and JS, for shafts h and js, by
including tolerance grades IT17 and IT18 in all basic sizes, and, for experimental
purposes only, by including tolerance grades IT1 to IT5 in basic sizes over 500 mm
up to 3 150 mm.
e) Limit deviations have been extended fo r some tole rance classes used in fine
mechanisms and horology, in basic sizes to 50 mm.
UP
Inch values have been deleted.
f)
The principles, terminology and symbols have been aligned with required
9)
contemporary technology.
bY
Users should note that all International Standards undergo revision from time to time
and that any reference made herein to any other International Standard implies its
latest edition, unless otherwise stated.
0 International Organization for Standardization, 1988
Printed in Switzerland
ii
IS0 286-2 : 1988 (El
Page
Contents
........................................................
Introduction
Scope .
..................................................
Field of application
References .
.................................................
Standard tolerances
.............................................
Limit deviations for holes
............................................
Limit deviations for shafts
Bibliography .
Notes on the presentation of tables 2 to 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables2to32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8to38
Annex - Graphical review of tolerance zones of holes and shafts . . . . . . . . . . . . . .
. . .
III
This page intentionally left blank

IS0 286-2 : 1988 (E)
INTERNATIONAL STANDARD
IS0 system of limits and fits -
Part 2:
Tables of standard tolerance grades and limit deviations
for holes and shafts
0 Introduction IS0 286 covers values for the upper deviations ES (for holes)
and es (for shafts), and the lower deviations EI (for holes) and
The need for limits and fits for machined workpieces was
ei (for shafts) (see figure 1).
brought about mainly by the inherent inaccuracy of manufac-
turing methods, coupled with the fact that “exactness” of size
NOTE - In the tables of limit deviations, the values for the upper
was found to be unnecessary for most workpieces. In order
deviation ES or es are shown above the values for the lower deviation
that function could be satisfied, it was found sufficient to
EI or ei except for tolerance class JS and js which is symmetrical about
manufacture a given workpiece so that its size lay within two
the zero line.
permissible limits, i.e. a tolerance, this being the variation in
size acceptable in manufacture.
Similarly, where a specific fit condition is required between
mating workpieces, it is necessary to ascribe an allowance,
either positive or negative, to the basic size to achieve the re-
2 Field of application
quired clearance or interference, i.e. a “deviation”.
The IS0 system of limits and fits provides a system of toler-
With developments in industry and international trade, it
ances and deviations suitable for plain workpieces.
became necessary to develop formal systems of limits and fits,
firstly at the industrial level, then at the national level and later
at the international level.
It should be noted that the general term “hole” or “shaft” used
in this International Standard can be taken as referring to the
This International Standard therefore gives the internationally
space contained by (or containing) the two parallel faces (or
accepted system of limits and fits.
tangent planes) of any workpiece, such as the width of a slot or
the thickness of a key (see also IS0 286-l 1. Similarly, the term
A general graphical representation of the relationship between
“commonly used holes and shafts” shall be interpreted as pro-
the respective tolerance classes and their deviations is given in
viding a very wide choice of limit deviations suitable for a wide
the annex.
variety of requirements.
For further information on terminology, symbols, bases of the
1 Scope
system, etc., see IS0 286-l.
This part of IS0 286 gives values of the limit deviations for
Notes on the presentation of tables 2 to 32 are given on
commonly used tolerance classes (zones) for holes and shafts
page 7.
calculated from the information given in IS0 286-l. This part of
IS0 286-2 : 1988 (E)
Zero line
a) Holes (internal features)
b) Shafts (external features)
Upper and lower deviations
Figure 1 -
Attention is drawn to the fact that the tolerance classes shown
3 References
in figures 2 and 3, and their limit deviations, given in tables 2
to 16, are not intended to give detailed directives on the selec-
NOTE - See also clause 7.
tion of tolerance classes for any purpose. Recommendations
for the selection of tolerance classes are given in IS0 1829.
I SO 286- 1, /SO system of limits and fits - Part I : Bases of
tolerances, deviations and fits.
NOTE - Some tolerance classes are only provided for a restricted
range of basic size steps. For further information, see note 1 on page 7.
IS0 1829, Selection of tolerance zones for general purposes.
4 Standard tolerances
6 Limit deviations for shafts
The values of standard tolerance grades IT1 to IT18 inclusive
A synoptic representation of the tolerance classes for shafts,
are given in table 1.
given in this part of IS0 286, is shown in figures 4 and 5.
For information on the bases of the system and its application,
see IS0 286-l ; for values of standard tolerances IT0 and ITOI, Attention is drawn to the fact that the tolerance classes shown
in figures 4 and 5, and their limit deviations, given in tables 17
see IS0 286-1, annex A, table 5.
to 32, are not intended to give detailed directives on the selec-
tion of tolerance classes for any purpose. Recommendations
for the selection of tolerance classes are given in IS0 1829.
5 Limit deviations for holes
A synoptic representation of the tolerance classes for holes, NOTE - Some tolerance classes are only provided for a restricted
range of basic size steps. For further information, see note 1 on page 7.
given in this part of IS0 286, is shown in figures 2 and 3.
Iso 286-2 : 1988 (El
IS0 2692, Technical drawings - Geometrical tolerancing -
7 Bibliography
Maximum material principle.
The following International Standards on tolerancing and
tolerance systems will be useful with regard to the application IS0 2768-1, General tolerances for dimensions without
of this part of IS0 286: tolerance indications - Part I: Tolerances for linear and
angular dimensions. 2,
406, Technical drawings - Linear and angular toleranc-
IS0
ing - Indications on drawings.
IS0 5166, System of cone fits for cones from C = 1 : 3 to
1 : 500, lengths from 6
to 630 mm and diameters up to 500 mm.
IS0 1101, Technical drawings - Geometrical tolerancing -
Tolerancing of form, orientation, location and run-out -
IS0 8015, Technical drawings - Fundamental tolerancing
Generalities, definitions, symbols, indications on drawings.
principle.
ISOIR 1930, IS0 system of limits and fits - Inspection ofplain
workpieces. I) IS0 8062, Castings - System of dimensional tolerances.
1) At present under revision.
2) At present at the stage of draft. (Revision, in part, of IS0 2768 : 1973.)

Is0 286-2 : 1988 (E)
Table 1 - Numerical values of standard tolerance grades IT for basic sizes up to 3 150 mm ‘)
This table, taken from IS0 286-1, has been included in this part of IS0 286 to facilitate understanding and use of the system.
NOTE -
Standard tolerance grades
Basic size
mm lT12) IT221 IT321 IT42) IT521 IT6 IT7 IT8 Il.8 IT10 IT11 IT12 IT13 IT1431 IT1531 IT1631 IT173) lTW3)
up to
Tolerances
Above and in-
cluding mm
Pm
- 33) 0,8 I,2 2 3 4
6 10 14 25 40 60 0,l 0,14
0,25 0,4 0,6 1 114
3 6 1 1,5 2,5 4 5 8 12
18 30 48 75 0,12 0,18 0,3 0,48 0,75 I,2
I,8
6 10 1 1,5 2,5 4 6 9 15 22 36 58
90 0,15 0,22 0,36 0,58 0,9 I,5 2,2
10 18 I,2 2 3
5 8 11 18 27 43 70 110 0,18 0,27
0,43 0,7 1,l 1,8 2,7
18 30 1,5 2,5 4 6 9
13 21 33 52 84 130 0,21 0,33 0,52
0,84 I,3 2,l 3,3
30 50 1,5 2,5
4 7 11 16 25 39 62 100
160 0,25 0,39 0,62 1 I,6 2,5 3,9
80 2 3 5 8 13 19 30
46 74 120 190 0,3 0,46 0,74
1,2 I,9 3 4,6
80 120 2,5 4 6 10 15 22 35
54 87 140 220 0,35 0,!54 0,87 1,4 2,2 3,5
5,4
120 180 3,5
5 8 12 18 25 40 63 100
160 250 0,4 0,63 1 I,6 2,5 4 6,3
180 250 4,5 7 10 14 20 29 46 72 115
185 290 0,46 0,72 I,15 I,85 2,9 4,6
250 315 6 8 12 16 23 32 52 81 130
210 320 0,52 0,81 1,3 2,l 3,2 5,2 8,1
400 7 9 13 18 25 36 57 89 140 230
360 0,57 0,89 1,4 2,3 3,6 5,7 83
400 500 8 10 15
20 27 40 63 97 155 250 400
0,63 0,97 I,55 2,5 4 6,3 9,7
500 6302) 9 11
16 22 32 44 70 110 175 280 440 0,7
I,1 I,75 2,8 4,4 7 11
630 8002) 10 13
18 25 36 50 80 125 200 320
500 0,8 I,25 2 3,2 5 8
12,5
800 10002) 11 15
21 28 40 56 90 140 230 360 560 0,9
1,4 2,3 3,6 5,6 9 14
12502) 13 18 24 33 47 66
105 165 260 420 660 I,05 1,65 2,6 4,2
6,6 IO,5 16,5
1250 16002) 15 21
29 39 55 78 125 195 310 500
780 I,25 1,95 3,l 5 7,8 12,5
19,5
1600 20002) 18 25
35 46 65 92 150 230 370 600
920 1,5 2,3 3,7 6 9,2 15
2000 25002) 22 30 41 55 78
110 175 280 440 700 1100 1,75
2,8 4,4 7 11 17,5 28
2500 31502) 26 36 50 1 68 96 135 210
330 540 860 1350 2,l 3,3 5,4
8,6 13,5 21 33
1) Values for standard tolerance grades IT01 and IT0 for basic sizes less than or equal to 500 mm are given in IS0 286-1, annex A, table 5.
2) Values for standard tolerance grades IT1 to IT5 (incl.) for basic sizes over 500 mm are included for experimental use.
3) Standard tolerance grades IT14 to IT18 (incl.) shall not be used for basic sizes less than or equal to 1 mm.

IS0 286-2 : 1988 E)
HI JSI
H2 JS2
EF3 F3
FG3 G3 H3 JS3 K3 M3 N3 P3 R3 s3
EF4 F4 FG4 G4 H4 JS4 K4 M4 N4 P4 R4 s4
E5 EF5 F5 FG5 G5 H5 JS5 K5 M5 N5 P5 R5 s5 T5 U5 v5 x5
CD6 D6 E6 EF6 F6 J6 K6 R6 T6 U6 V6 X6 Y6 Z6 ZA6
FG6 G6 H6 JS6 M6 N6 P6 S6
CD7 D7 E7 EF7 F-7 FG7 G7 H7 JS7 J7 K7 M7 N7 P7 R7 s7 T7 u7 V7x7 Y7 27 ZA7 ZB7 zc7
B8 c8 CD8 D8 E8 EF8 F8 ZB8 zc8
FG8 G8 H8 JS8 J8 K8 M8 N8 P8 R8 S8 T8 U8 V8 X8 Y8 28 ZA8
A9 B9 C9 CD9 D9 E9 EF9 F9 FG9 G9 H9 JS9 K9 M9 N9 P9 R9 s9 u9 x9 Y9 z9 zA9 ZB9 ZC9
Al0 BIO Cl0 CD10 DIO El0 EFIO FIO RIO x10 YIO ZIO ZAIO ZBIO ZCIO
FGIO GIO HI0 JSIO KIO Ml0 NIO PI0 SIO UIO
All Bll Cl1 Dll HI1 JSII Nll Zll ZAII ZBII ZCII
Al2 812 Cl2 D12
HI2 JS12
Al3 B13 Cl3 D13 HI3 JS13
HI4 JS14
HI5 JS15
HI6 JSl6
JS17
HI7
HI8 JSl8
2 3 4 5 7 9 iii ii 12 13 14 15 16
6 8
I
Tables
J
Figure 2 -
Synoptic representation of tolerance classes for holes for basic sizes less than or equal to 500 mm
JSI
JS2
JS3
JS4
JS5
D6 E6 F6 G6 H6 JS6 K6 M6 N6 P6 R6 S6 T6 U6
07 E7 F7 G7 H7 JS7 K7 M7 N7 P7
R7 s7 T7 u7
D8 E8 F8 G8 H8 JS8 K8 M8 N8 P8 R8 S8 T8 U8
D9 E9 F9
H9 JS9 N9 P9
DIO El0 HI0 JSIO
Dll HI1 JSII
D12 HI2 JS12
D13 HI3 JS13
HI4 JS14
HI5 JS15
HI6 JSl6
HI7 JS17
HI8 JSl8
L
I
3 7 8
6 9 10 11 12 13
4 I 5
Tables
NOTE - The tolerance classes in the frame are given for experimental use.
Figure 3 - Synoptic representation of tolerance classes for holes for basic sizes
greater than 500 mm and less than or equal to 3 150 mm

IS0 286-2 : 1988 (El
hl jsl
h2
ef3 f3 fg3 h3 k3 m3 n3 r3 s3
93 ja p3
f4 fg4 h4 k4 m4 n4 r4 s4
ef4
94 64 p4
cd5 d5 e5 ef5 f5 fg5 h5 j5 k5 m5 n5 r5 s5 t5 u5 v5 x5
95 j* P5
f-6 s6 t6 u6 ~6x6 y6 z6 za6
cd6 d6 e6 ef6 f6 fg6 h6 js6 j6 k6 m6 n6
96 P6
z7 za7 zb7 zc7
cd7 d7 e7 ef7 f7 fg7 h7 js7 j7 k7 m7 n7 r7 s7 t7 u7 v7 x7 y7
97 P7
r8 t8 u8 v8 x8 y8 z8 za8 zb8 zc8
c8 cd8 d8 e8 ef8 f8 fg8 h8 j8 k8 m8 n8 s8
98 ia p8
a9 b9 c9 cd9 d9 e9 ef9 f9 fg9 h9 k9 m9 n9 r9 s9 u9 z9 za9 zb9 zc9
99 P9 By9
id
r10 x10 y10 z10 zal0 zbl0 zcl0
a10 b10 cl0 cdl0 d10 e10 efl0 f10 fgl0 h10 jsl0 k10 SIO
9’0 P'O
dll hll jsl 1 kll zll zall zbll zcll
all bll cl1
al2 b12 cl2 d12 h12 js12 k12
h13 k13
al3 b13 d13 js13
h14 js14
h15
js15
h16 js16
h17 js17
h18
js18
29 30 31 32
17 18 19 20 21 22 23 24 25 26 27 28
Tables
Figure 4 - Synoptic representation of tolerance classes for shafts for basic sizes less than or equal to 500 mm
jsl
W
js5
e6 f6 h6 js6 k6 m6 n6 f-6 s6 t6 u6
96 P6
k7 m7 n7 r7 s7 t7 u7
d7 e7 f7 h7 js7
97 P7
d8 e8 f8 h8 k8 r8 s8 u8
98 id p8
d9 e9 f9 h9 k9
id
d10 e10 h10 jsl0 k10
dll hll jsll kll
h12 js12 k12
h13 js13 k13
h14 js14
h15 js15
h16 js16
h17 js17
h18 js18
25 26 27 28 29
18 19 20 21 22 23 24 -
Tables
NOTE - The tolerance classes in the frame are given for experimental use.
Figure 5 - Synoptic representation of tolerance classes for shafts for basic sizes
greater than 500 mm and less than or equal to 3 150 mm

Is0 286-2 : 1988 (El
Notes on the presentation of tables 2 to 32
1 Values may be calculated, from the bases given in IS0 286-1, for fu ndamental deviations used for tolerance classes,
which there is no entry in
for the tables, but for which the space has been left blank.
2 A small horizontal separation has been inserted in the tables, where appropriate, to distinguis Ih between values for
basic sizes less than or equal to 506 mm and those greater
than 500 mm, which have been derived from different bases.

IS0 286-2 : 1988 (E)
Table 2 - Limit deviations for holes A, B and Cl)
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
~~
Basic size
AZ) B2) C
mm
up to
Above and in- 9 IO 11 12 13 8
9 10 11 12 13 8 9 10 11 12 13
eluding
- + 295 + 310 + 330 + 370 + 410 +I54 +I65 + 180 + 200 + 240 + 280
32) + 74 + 85 +I00 +I20 + 160 + 200
+ 270 + 270 + 270 + 270 + 270 +I40 +I40 + 140 + 140 + 140 + 140
+ 60 +60 +60 +60+ 60+ 60
3 + 215
6 + 300 + 318 + 345 + 390 + 450 +I58 +I70 + 188 + 260 + 320 + 88 +I00 +I18 +I45 + 190 + 250
+ 270 + 270 + 270 + 270 + 270 +I40
+I40 + 140 + 140 + 140 + 140 + 70 + 70
+ 70 + 70 + 70 + 70
6 10 + 316 + 338 + 370 + 430 + 500 +I72 +I86 + 208 + 240 + 300 + 370
+I02 +I16 +I38 +I70 + 230 + 300
+ 280 + 280 + 280 + 280 + 280 +I50
+I50 + 150 + 150 + 150 + 150
+ 80 +80 +80 +80 + 80 + 80
10 18 + 33 + 360 + 400 + 470 + 560 +-I77 +I93 + 220 260
+ + 330 + 420 +I22 +I38 +I65 +205 + 275 + 365
+ 290 + 290 + 290 + 290 + 290 +I50
+I50 + 150 + 150 + 150
+ 150 + 95 + 95 + 95 + 95 + 95 + 95
18 30 + 352 + 384 + 430 + 510 + 630 +I93
+212 + 244 + 290 + 370 + 490 +I43 +I62 +I94 +240 + 320 + 440
+300+300+300+300+300 +I60 +I60 + 160 + 160 + 160 + 160 +I10 +I10
+I10 +I10 + 110 + 110
30 40 + 372 + 410 + 470 + 560 + 700 +209
+232 + 270 + 330 + 420 + 560 +I59 +I82 +220 +280 + 370 + 5'0
+ 310 + 310 + 310 + 310 + 310 +I70
+I70 + 170 + 170 + 170 + 170 +I20 +I20 +I20 +I20 + 120 + 120
40 50 + 382 + 420 + 480 + 570 + 710 +219 +242 + 280 + 340 + 430 + 570 +I69 +I92 +230 +290 + 380 + 520
+ 320 + 320 + 320 + 320 + 320 +I80 +I80 + 180 + 180 + 180 + 180 +I30 +I30 +I30 +I30 + '30 + '30
50 65 + 414 + 4.60 + 530 + 640 + 800 +236 +264 + 310 + 380 + 490 + 650 +I86
+214 +260 +330 + 440 + 600
+ 340 + 340 + 340 + 340 + 340 +190 +I90 + 190 + 190 + 190 + 190
+I40 +I40 +I40 +I40 + 140 + WJ
65 80 + 434 + 480 + 550 + 660 + 820 +246 +274 + 320 390
+ + 500 + 660 +I96 +224 +270 +340 + 60 + 6'0
+360+360+360+360+360+200 +200 + 200 + 200 + 200 + 200 +I50
+I50 +I50 +I50 + 150 + '50
80 100 + 467 + 520 + 600 + 730 + 920 +274 +307 + 360 + 440 + 570 + 760 +224 +257 +310 +390 + 520 + 710
+ 380 + 380 + 380 + 380 + 380 +220
+220 + 220 + 220 + 220 + 220 +I70 +I70 +I70 +I70 + 170 + '70
100 120
+ 497 + 550 + 630 + 760 + 950 +294 +327 + 380 + 460 + 590 + 780 +234 +267 +320 +400 + 530 + 720
+ 410 + 4'0 + 410 + 410 + 410 +240
+240 + 240 + 240 + 240 + 240 +I80 +I80 +I80 +I80 + 180 + 180
120 140
+ 560 + 620 + 710 + 860 +I090 +323 +360 + 420 + 510 + 660 + 890 +263 +300 +360 +a + 600 + 830
+ 460 + 4.60 + 460 + 460 + 460 +260 +260 + 260 + 260 + 260 + 260 +200 +200 +200 +200 + 200 + 200
140 160 + 620 + 680 + 770 + 920 +1150 +343 +380 + 440 + 530 + 680 + 910 +273 +310 +370 +460 + 6'0 + 840
+ 520 + 520 + 520 + 520 + 520 +280 +280 + 280 + 280 + 280 + 280 +210 +210 +210 +210 +
2'0 + 2'0
160 180 + 680 + 740 + 830 + 980 +I210 +373 +410 + 470 + 560 + 710 + 94-O +293 +330 +390 +480 + 630 + 860
+ 580 + 580 + 580 + 580 + 580 +310 +310 + 310 + 310 + 310 + 310 +230 +230 +230 +230 + 230 + 230
180 200 + 775 + 845 + 950 +I120 +I380 +412 +455 + 525 + 630 + 800 +I060 +312 +355 +425 +530 + 700 + 960
+ 660 + 660 + 660 + 660 + 660 +340
+340 + 340 + 340 + 340 + 340 +240 +240 +240 +240 + 240 + 240
200 225 + 855 + 925 +I030 +I200 +I460 +452 +495 + 565 + 670 + 840 +I100
+332 +375 +445 +550 + 720 + 980
+ 740 + 740 + 740 + 740 + 740 +380 +380 + 380 + 380 + 380 + 380 +260
+260 +260 +260 + 260 + 260
225 250 + 935 +I005 +I 'IO +I280 +I540 +492 +535 + 605 710
+ + 880 +I140 +352 +395 +465 +570 + 740 +I000
+ 820 + 820 + 820 + 820 + 820 +420 +420 + 420 + 420 + 420 + 420
+280 +280 +280 +280 + 280 + 280
+610 + 690 + 800 +I000 +I290 +381
+I050 +I130 +I240 +I440 +I730 +561 +430 +510 +620 + 820 +I110
250 280
+ 920 + 920 + 920 + 920 + 920 +480 +480 + 480 + 480 + 480 + 480
+300 +300 +300 +300 + 300 + 300
280 +I +I 860 +62' +670
315 +I 180 +I 260 +I 370 570 + 750 + 860 +I060 +I350 +411 +460 +540 +650 + 850 +'I40
+I()50 +I~~ +I050 +I050 +I050 +540 +540 + 540 + 540 + 540 + 540
+330 +330 +330 +330 + 330 + 330
+I340 +I430 +I560 +I770 +2000 +689 +740 + 830 + 960 +I170 +I490 +449 +500 +590 +720 + 930 +1250
315 355
+I200 +I200 +I200 +I200 +I200 +600
+600 + 600 + 600 + 600 + 600 +360 +360 +360 +360 + 360 + 360
+I490 +I580 +I710 +1920 +2240 +769 +820 + 910 +I040 +I250 +I570 +489 +540 +630 +760 + 970 +I290
355 400
+I350 +I350 +I350 +1350 +I350 +680 +680
+ 680 + 680 + 680 + 680 +400 +400 +400 +400 + 400 + 400
+I655 +I750 +I900 +2130 +2470 +857 +915 +lOlO +I 160 +I390 +I730 +537 +595 +690 +840 +I070 +I410
400 450
+I500 +'gN,l +I500 +I500 +1500 +760 +760 + 760 + 760 + 760 + 760 +440 +440 +440 +440+440+440
+I805 +I900 +2050 +2280 +2620 +937 +995 +I090 +1240 +I470 +I810 +577 +635 +730 +880 +I110 +I450
450 500
+I650 +I650 +I650 +I650 +I650 +840 +840 + 840 + 840 + 840 + 840 +480
+480 +480 +480 + 480 + 480
Fundamental deviations A, B and C are not provided for basic sizes greater than 500 mm.
1)
Fundamental deviations A and B shall not be used for any standard tolerance in basic sizes less than or equal to 1 mm.
2)
IS0 286-2 : 1988 (E)
Table 3 - Limit deviations for holes CD, D and E
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
Basic size
CD’) D E
mm
1 Above 1 ~ZJ- 1 6 1 7 / 8 1 9 / IO 1 6 7 8 j 9 / 10 1 11 1 12 / 13 ( 5 / 6 7 8 9 10
cludlng
+40 +# + 26 +34 + 45+ 60+ 80 + 120 + 160 + 18 + 20
+ 30
+34 +34 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 14 + 14
+54 +58 + 42 4-48 + 60 + 78 + 105 + 150 + 210 + 25 + 28
3 6
+46 +46 + 30 + 30 + 30 + 30 + 30 + 30 + 30 + 20 + 20
+65 -I-71 -1-78 +92 +I14 +49 + 55
6 10
+56 +56
+56 +56 +56 +40 +40
+ 61 +68 -l-77 + 93 + 120 + 160 + 230 + 320 +40 +43 +50
+50 +50 +50 + 50 I+ 50 + 50 + 50 + 50 + 32 + 32 + 32
+ 124
+ 78 +86 +98 + 117 ~+ 149 + 195 + 275 + 395 +49 +53 + 61 + 73 + 92
+ 65 + 65 + 65 + 65 + 65 + 65 + 65 +40 +40 +40 +40 +40 + 40
+ 65
+96 +I05 +I19 + 142 + 180 + 240 + 330 + 470 + 61 +66 + 75 +89 +I12 + 150
+
+80 +80 + 80 + 80 + 80 + 80 80 + 80 +50 +50 +50 +50 +50 + 50
+'I9 +130 +146 + 174 + 220 + 290 + 400 + 560 + 73 + 79 + 90 +I06 +I34 + 180
15018011/ll I +I00 I +I00 I +I00 I + 100 I + 100 I + 100 I + 100 I + 100 I + 60 /I + 60 + 60 /I + 60 + 60 I + 60
I
+I42 +I55 +I74 +I07 +I25 +I59 + 212
80 120
+I20 +I20 +I20 + 72 + 72 + 72 + 72
+I25 +I48 +I85 + 245
+85 +85 + 85
+85
+I46 i-172 +215 +285
+ 100
+I00 +I00 +I00
+242 +271 + 320 + 400 + 510 + 710 +I000 +I33 +I42
I 250/ 3151 I I I I +I90 +I90 +I90 + 190 + 190 + 190 + 190 + 190 +I10 +I10
I+2221 I I I I I I I I
+246 +267
+I82 +214 +265 + 355
+210 +210 +I25 +I25 +I25 + 125
+270 + 293 +232 +290 + 385
+230 +230
+-l-i +I35 +I35 + 135
500 630
+ 610 + 790
630 800
+ 290 + 290
I I
+376 +410 +460 + 550 + 680
+880 +I 720 +226
+320 +320 +320 + 320 + 320 + 320 + 320 +I70
+515
+416 +455 + 610 + 770 +I010 +261
+350 +350 +350 + 350 +350 +350 +I95
+530 + 720
+220 + 220
I I
+590 +655 +760
+480 +4ao +480
+655 +730 +850
b&d / / / 1
+520 +520 +520
1) The intermediate fundamental deviation CD is provided primarily for fine mechanisms and horology. If tolerance classes involving this fundamental
deviation in other basic sizes are required, they may be calculated in accordance with IS0 286-l.

Iso 286-2 : 1988 (El
Table 4 - Limit deviations for holes EF and F
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
EF’) F
I I
I I
up to
Above and in- 3 4 5 6 7 8 9 10 3 4 7 8
5 6 9 10
r+II nrlinrr
bIUUII iy
+I2 +I3 +I4 +I6 +20 +24 +35 +50 +8 +9 +I0 + 12 + 16 + 20 +31 +46
-
+I0 +I0 +I0 +I0 +I0 +I0 +I0 +I0 +6 +6 +6 +6 +6 +6 +6 +6
+16,5 +I8 +I9 +22 +26 +32 +44 +62 +12,5 +I4 +I5 +I8 +22 +28 +40 +58
3 6
+I4 +I4 +I4 +I4 +I4 +I4 +I4 +I0 + 10
+I4 +I0 +I0 + 10 + 10 + 10 + 10
+20,5 +22 +24 +27 +33 +40 +54 +76 +15,5 +I7 +I9 +22 + 28 +35 +49 + 71
6 IO
+I8 +I8 +I8 +I8 +I8 +I8 +I8 +I8 +I3 +I3 +I3 + 13 + 13 + 13 + 13 + 13
10 18 +I9 +21 +24 +27
+34 +43 +59 + 86
+I6 +I6
+I6 + 16 + 16 + 16 + 16 + 16
18 30 +24 +26 +29 +33
+41 +53 + 72 +I04
+20 +20 +20 + 20 + 20 + 20 + 20 + 20
30 50 +29 +32 +36 +41
+50 +64 + 87 +I25
+25 +25 +25 + 25 + 25 + 25 + 25 + 25
50 80
+43 +49 +60 + 76 +I04
+30 + 30 + 30 + 30 + 30
80 120
+51 +58 +71 +90 +I23
+36 + 36 + 36 + 36 + 36
180 +61 + 68 +83 +I06 +I43
+43 +43 +43 +43 4-43
180 250 +70 +79 +96 +I22 +I65
+50 +50 +50 +50 +50
250 315
+79 +88 +I08 +I37 +I86
+56 +56 +56 +56 +56
315 400
~-87 + 98 +I19 +I51 +202
+62 + 62 + 62 + 62 + 62
400 500
+95 +I08 +I31 +I65 +223
+68 +68
. . I . I . +68 I +%
+c
630 +I20 +I46 +I86 +251
+ 76 + 76 + 76 + 76
630 800 +I30
+I60 +205 +280
+80 + 80 + 80 + 80
800 1 000
+I42 +I76 +226 +316
+86 +86 +86 +86
1000 1 250
+I64 +203 +263 +358
+ 98 + 98 +98 +98
1 250 1 600
+I88 +235 +305 +420
+I10 +I10 +I10
+I10
I
’
+212 +270 +350 + 490
1 600 2 000
+I20 +I20 +I20 +I20
2 000 2 500 +240 +305 +410
+570
+I30 +I30 +I30 +I30
2500 3 150
+280 +355 +475 +685
+I45 +I45 +I45 +I45
I
1) The intermediate fundamental deviation EF is provided primarily for fine mechanisms and horology. If tolerance classes involving this fundamental
deviation in other basic sizes are required, they may be calculated in accordance with IS0 286-l.
ISO286-2:1988 EI
Table 5 - Limit deviations for holes FG and G
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
Basic size
FG’) G
mm
up to
Above and in- 3 4 5 6 7 8 9 10 3 4 5 6 7 8 9 10
cludina
+6 +7 +8 +I0 +I4 +I8 +29 +44 + 4 +5 +6 +8 + 12 + 16 + 27 + 42
- 3
+4 +4 +4 +4 +4 +4 +4 +4 +2 +2 +2 +2 +2 +2 +2 +2
3 6 + 8,5 +I0 +I1 +I4 +I8 +24 +36 +54 + 6,5 + 8 + 9 + 12 +I6 +22 +34 + 52
+6 +6 +6 +6 +6 +6 +6 +6 +4 +4 +4 +4 +4 +4 +4 +4
+10,5 +I2 +I4 +I7 +23 +30 +44 +66 + 7,5 + 9 +I1 + 14 + 20 + 27 +41 +63
I0 +8 +8 +8 +8 +8 +8 +8 +8 +5 +5 +5 +5 +5 +5 +5 +5
10 18 +9 +I1 +I4 + 17 +24 +33 +49 + 76
+6 +6 +6 +6 +6 +6 +6 +6
18 30 +I1 +I3 +I6 + 20 +28 +40 +59 + 91
+7 +7 +7 +7 +7 +7 i-7 +7
30 50 +I3 +I6 +20 +25 +34 +48 + 71 +I09
+9 +9 +9 +9 +9 +9 +9 +9
50 80 +23 +29 +40 +56
+I0 + 10 + 10 + 10
80 120 +27 +34 +47 +66
+I2 + 12 + 12 + 12
120 180 +32 +39 +54 +77
+I4 + 14 + 14 + 14
180 250 +35 +44 + 61 + 87
+I5 + 15 + 15 + 15
250 315
+40 +49 +69 +98
+I7 + 17 + 17 + 17
315 400 +43 +54 + 75 +I07
+I8 + 18 + 18 + 18
400 500 -I47 +60 +83 +I17
+20 + 20 + 20 + 20
500 630 +66 + 92 +I32
+22 +22 +22
630 800 + 74 +I04 +I49
+ 24 + 24 + 24
800 1 000 +82 +I16 +I66
+ 26 + 26 + 26
1 000 1 250 +94 +I33 +I93
+ 28 +28 +28
1 250 1 600 +I08 +I55 +225
+30 + 30 + 30
1600 2 000 +I24 +I82 +262
+32 +32 +32
2000 2500 +I44 +209 +314
+34 +34 +34
2500 3 150 +I73 +248 +368
+38 +38 +38
1) The intermediate fundamental deviation FG is provided primarily for fine mechanisms and horology. If tolerance classes involving this fundamen-
tal deviation in other basic sizes are required, they may be calculated in accordance with IS0 286-l.

~so 286-2 : 1988 (El
Table 6 - Limit deviations for holes H
Upper limit deviation = ES
Lower limit deviation = EI
H
Basic size
I I
I
mm 1 2 3 4 5 6 7 8 9 10 11 12 13 14’) 15’) 16’) 17’) 18’)
up to
Deviations
Above and in-
I
1 eluding 1
mm
Pm
I I I
- 31, +0,8 + I,2 + 2 + 3 + 4 + 6 +I4 +25 +40 +
+ 10 60 +O,l +0,14 +0,25 +0,4 + 0,6
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
3 6 +I +1,5+2,5 +4 +5 + 8 + 12
+ 18 + 30 + 48 + 75 +0,12
+0,18 +0,3 +0,48 + 0,75 + I,2 + I,8
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+15+25+4 +6 + 9
+I5 +22 +36 +58 + 90 +0,15 +0,22 +0,36 +0,58 + 0,9 + I,5 + 2,2
6 10 +’ o’ o’ o o
0 0 0 0 0 0 0 0 0 0 0
0 0 0
10 I8 +I,2 + 2 + 3 + 5 + 8 + 11 + 18 + 27 + 43 + 70 + 110 +0,18 +0,27 +0,43 +0,7 + I,' + I,8 + 2,7
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
+1,5+2,5+4 +6 +9 + 52 + 84 + 130 +0,21 +0,33 +0,52 +0,84 + I,3 + 2,' + 3,3
0 0 0 0 0 0 0
0 0 0
30 5o +I,5 +2,5+4 -1-7 +'i + 16 +25 +39 + 62 +I00 + 160 +0,25 +0,39 +0,62 +I + I,6 + 2,5 + 3,9
0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0
50 80 +; +; +; +; +'3 + 19 + 30
+ 46 + 74 +I20 + 190 +0,3 +0,46 +0,74 +I,2 +I,9 +3 + 4,6
0 0 0 0 0 0 0 0 0 0 0 0 0 0
12o +2,5 o + 4 o + 6 o o +I; + $ + 3; + ";: + 87 +I; + 22; +;.,, +;,54 +;,87 +;,4
+ 10 + 2,2 + 3,5 + 5,4
0 0 0 0
120 180 +3,5+5 +8 +I2 +I: +25 +40 +63 +I00 +I60 + 250 +0,4 +0,63 +I +I,6 + 2,5 + 4 + 6,3
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
180 250 +4,5 -I- o+l; 7 +I4 o+2;+2;+; + 72 +I15 +I85 -t 290 +0,46 +0,72 +I,15 +I,85 + 2,9 + 4,6 + 7,2
o o o o 0 0 0 0 0
0 0 0
+32 +52 +81 +I30 +210 + 320 +0,52 +0,81 +I,3 +2,1 + 3,2 + 5,2 + 8,l
0 0 0 0 0 0 0 0 0 0
0 0 0
315 + 36 + 57 + 89 +I40 +230 + 360 +0,57 + 0,89 +I,4 +2,3
+ 3,6 + 5,7 + 8,9
0 0 0 0 0 0 0 0 0 0 0 0 0
+8 +I0 +I5 +20 +27 + 40 + 63 + 97 +I55 +250 + 400 +0,63 +0,97 +I,55 +2,5 -t 4 + 6,3 + 9,7
I 400 , 5oo I 0 I 0 I 0
I 0 I 0 I 0 I 0 I 0 I 0 I 0 I
01 0 I 0 I 0 lo Iol 01 01
630 + ; +I:, +I; +$ +3; + 4: + 7; o o o
630 + ; +I:, +I; +$ +3; + 4: + 7; +I10 +I10 o +I75 +I75 o +280 +280 o + + 440 440 +0,7 +0,7 + + I,' I,' +I,75 +I,75 +2,8 +2,8 + + 4,4 4,4 -I- -I- 7 7 +I1 +I1
500 500
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+I0 +I0 + + 80 80 +I25 +I25 +200 +200 +320 +320 + + 500 500 +0,8 +0,8 +I,25 +I,25 +2 +2 +3,2 +3,2 +5 +5 +8 +8 +12,5 +12,5
630 630 800 800 o o +I; +I; +I; +I; 'f 'f +3; +3; + + ; ; o o o o o o o o
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
800 800 + + 90 90 +I40 +I40 +230 +230 +360 +360 + + 560 560 +0,9 +0,9 +I,4 +I,4 +2,3 +2,3 +3,6 +3,6 + + 5,6 5,6 + + 9 9 +I4 +I4
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+I3 +I3 +I8 +I8 +24 +24 +33 +33 A-47 A-47 +66 +66 +I05 +I05 +I65 +I65 +260 +260 +420 +420 + + 660 660 +I,05 +I,05 +I,65 +I,65 +2,6 +2,6 +4,2 +4,2
+ + 6,6 6,6 +10,5 +10,5 +16,5 +16,5
1 1 000 000 1250 1250
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1250 250 1 1 1600 600 iI+li +I5 / +21 +2! / +29 +39 +55 + 78 +I25 +I95 +310 +500 + 780 +I,25 +I,95 +3,1 +5 + 7,8 +12,5 + 19,5
+2: 1 +si / +5i /I + 7; / +I25 11 +I95 1 / +310 11 +500 11 + 780 11 +I,25 1 / +I,95 1 / +itl 1 +i 1 + %t8 1 +I:15 1 +'%.s)
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2ooo 2ooo +I8 +I8 o o +2; +2; +3; +3; +; +; +6; +6; + + 92 92 +I50 +I50 +230 +230 +370 +370 +600 +600 + + 920 920 +I,5 +I,5
+2,3 +2,3 +3,7 +3,7 +6 +6 + + 9,2 9,2 +I5 +I5 +23 +23
1 1 600 600
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+280 +280 +440 +440 +700 +700 +I100 +I100 +I,75 +I,75
+2,8 +2,8 +4,4 +4,4 +7 +7 +I1 +I1 +17,5 +17,5 +28 +28
2 2 000 000
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+210 +330 +540 +86O +I350 +2,1
2 500 3150 +26 +26 +36 +36 +50 +50 +68 +68 +96 +96 +13E +I35 +210 +330 +540 +86O +I350 +2,1 +3,3 +3,3 +5,4 +5,4 +8,6 +8,6 +13,5 +13,5 +21 +21 +33 +33
2 500
3150 0 0 0 0 0 0 010 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 * *
1) Tolerance grades IT14 to IT18 (incl.) shall not be used for basic sizes less than or equal to 1 mm.
2) The values given in the frame, for tolerance grades IT1 to IT5 (incl.), for basic sizes greater than 500 mm and less than or equal to 3 150 mm, are included
for experimental use.
Table 7 -
Limit deviations’) for holes JS
Upper limit deviation = ES
Lower limit deviation = EI
JS
Basic size
mm 1 2 3 4 5 6 7 8 9 10 11 12 13 142)
152) 162) 17 18
Upto .
Deviations
Above and in-
&ding mm
Pm
-
32) +0,4 +0,6 fl &I,5 +2 I!I 5 AI 12,5 f. 20 f0,07 +0,125 f0,2 +0,3
+3 z!I 7 +30 +0,05
3 6 &0,5 f0,75 &I,25 f 2 31 2,5 31 4 k 6 k 9 k 15 Z!I 24 IL 37,5 f0,06 zk 0,09 f0,15
f0,24 -fo,375 It 0,6 f 0,9
10 *0,5 f0,75 &I,25 Z!I 2 +3 AI 4,5 IL 7,5 f 11 I!I 18 +29 k45 f0,075 kO,ll +0,18 + 0,29 f0,45 I!I 0,75 z!I I,1
10 18 +0,6 fl +1,5 f 2,5 f 4 f 5,5 f 9 f 13,5 I?I 21,5 + 35 I!I 55 AI 0,09 +0,135 f0,215
f0,35 f0,55 zk 0,9 z!I I,35
18 30 _+0,75 &I,25 +2 _+3 + 4,5 I!I 6,5 z!I IO,5 AZ 16,5 k 26 f 42 f 65 Iko,105 +0,165 f0,26 +0,42 +0,65 I!z I,05 + I,65
30 50 f0,75 &I,25 f2
f 3,5 rt 5,5 f 8 f 12,5 f 19,5 f 31 IL50 f80 20,125 z!I 0,195 f0,31 f0,5 f0,8 f I,25 f I,95
50 80 +I *1,5 f2,5 +4 f 6,5 k 9,5 It
15 + 23 f 37 Ik60 f 95 +0,15 +0,23 +0,37 f0,6 f 0,95 AI I,5 f 2,3
80 120 +I,25 +2 +3 f5 I!I 7,5 fll f 17,5 f 27 AI 43,5 z!I 70 +110 +0,175 +0,27 f0,435 +0,7 + I,1 f I,75 f 2,7
180 &I,75 f2,5 f4 f6 k9 fl2,5 f 20 +31,5 250 280 +I25 +0,2 f0,315 f0,5 f0,8 &I,25 f 2 AI 3,15
180 250 +2,25 f3,5 +5 f7 f 10 +14,5 k 23
f 36 + 57,5 Ik 92,5 +145 +0,23 kO,36 f0,575 * 0,925 &I,45 f 2,3 31 3,6
250 315 +3 f4 +6 f8 &II,5 +I6 3~ 26 ZiI 40,5 f 65 f105 f.160 +0,26 Ik 0,405 +0,65 +1,05 &I,6 3~ 2,6 + 4,05
315 400 +3,5 +4,5 +6,5
+9 +12,5 +I8 f 28,5 f 44,5 IL 70 &I15 AI180 kO,285 f0,445 f0,7 &I,15 +I,8 z!z 2,85 AI 4,45
400 500 +4 +5 f 10 +20 AI 31,5 Ik 48,5 f 77,5 f125 +200 f0,315 f 0,485 f0,775
+I,25 +2 f 3,15 f 4,85
+7,5 fl3,5
3)
630 Ik 4,5 f 5,5 I!I 8 &II fl6 f22 zk 35 f. 55 31 87,5 fl40 +220 f0,35 f0,55 +0,875 &I,4 f2,2 + 3,5 f 5,5
I I
630 800 AI 5 +6,5 zk 1 &I,6 1 +2,5 1 + 4 1 21 6,25 1
9 1 kl2.5 I 1 fl8 11 +25 1 It 40 1 f 62.5 I 1 +I00 1 +I60 1 +250 1 zkO.4 1 +0,625 1 +I
800 1 000 AI 5,5 I!I 7,5 fl4 +20 k28 AI 45 f 70 fl15 +I80 +280 *0,45 +0,7 &I,15 +I,8 +2,8 +4,5 +7
&IO,5
1 1000 1 1250 11 I!I 6,5 1 + 9 1 +I2 1 &16,5 1 +23,5 (I +33 ( k 52,5 1 f. 82,5 1 +I30 1 k210 1 k330 1 +0,525 1 kO,825 ( +I,3 1 f2,l 1 +3,3 ( + 5,25 1 + 8825 1
1 1250 1 1600 11 z!I 7,5 ( HO,5 1 +14,5 1 +19,5 1 f27,5 11 3139 1 f 62,5 1 IL 97,5 1 &I55 j _+250 1 k390 1 f0,625 1 f0,975 1 fl,55 1 f2,5 1 +3,9 1 * 6,25 1 + 93 1
1600 2 000 f 9 f4,6 I?I 7,5 &II,5
+12,5 fl7,5 +23 +32,5 +46 f 75 It115 +I85 +300 +460 +0,75 &I,15 &I,85 f3
2ooo 2500 &II rtl5 +20,5 +27,5 3139 +55 31 87,5 L-140 k220 +350 +1,4 +2,2 f3,5 +5,5 31 8,75 +14
+550 f0,875
3 150
2500 &I3 +I8 L-25 +34 +48 +67,5 &IO5 +I65 +270 f430 +675 *I,65 +2,7 +4,3 f6,75 &IO,5 +16,5
&I,05
1) In order to avoid repetition of equal values, the table lists the values as ” f x”; this is to be interpreted as ES = +x and EI = -x, e.g. T i;$i pm.
2) Tolerance grades IT14 to IT16 (incl.) shall not be used for basic sizes less than or equal to 1 mm.
3) The values in the frame, for tolerance grades IT1 to IT5 (in&), for basic sizes greater than 500 mm and less than or equal to 3 150 mm, are included for experimental use.

ISO 286-2 : 1988 E)
Table 8 - Limit deviations for holes J and K
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
Basic size
K
J
mm
up to
Above and in- 6 7 8 9’) 3 4 5 6 7
8 92) 102)
eluding
+2 +4 +6 0 0
0 0 0 0 0 0
- 3
-4 -6 -8 -2 -3 -4 - 6 - 10 - 14 -25 -40
3 6 +5 k 63) +I0 0 +0,5 + 2 + 3 + 5
-3 -8 -2,5 -3,5
-5 - 6 - 9 - 13
6 10 ‘; +8 + 1 + 2 + 5 + 6
+I2 0 +0,5
-7 -10
-2,5 -3,5 -5 - 7 - 10 - 16
10 18 ‘; +I0
+I5 0 +I +2 + 2 + 6 + 8
-8
-12 -3 -4 -6 - 9 - 12 - 19
18 30 ;; +I2 +20 -0,5 0 +I + 2 + 6 + 10
-9 -13 -4,5 -6 -8 - 11 - 15 - 23
30 5o +I0 +I4 +24 -0,5 +I +2 + 3 + 7 + 12
-6 -11 -15 -4,5 -6 -9 - 13 - 18 - 27
50 8o +I3 +I8 +28 + 4 + 9 + 14
+3
-6 -12 -18 -10
- 15 - 21 - 32
80 I20 +I6 +22 +34 + 4 + 10
+2 + 16
-6
-13 -20 -13 - 18 - 25 -38
120 180 +I8 +26
+41 +3 + 4 + 12 + 20
-7 -14 -22 -15 - 21 - 28 -43
180 250 ‘; +30 +47 +2 + 5 + 13 +22
-16 -25 -18 - 24 -33
-50
250 315 +25 +36 +55 +3 + 5 + 16 + 25
-7 -16 -26 -20
- 27 - 36 - 56
315 400 y +3 + 7 + 17 + 28
+39 +60
-18 -29 -22 - 29 -40
- 61
400 5oo +33 +2 + 8 + 18 + 29
+43 +66
- 7 -20 -31 -25 32 45
- - -68
I . 1 I I I
I I I I I I
0 0 0
I 630
-44 - 70 -110
0 0 0
630 800
-50 -80 -125
0 0 0
800 1000
-90 -140
-56
0 0 0
1 000 1 250
-66 -105 -165
0 0 0
1 250 1 600
- 78 -125 -195
0 0 0
2 000
1 600
- 92 -150 -230
0 0 0
2 500
2 000
-110 -175 -280
0 0 0
2500 3 150
-135 -210 -330
1) Tolerance classes J9, JIO, etc. are symmetrical about the zero line. For these values, see JS9, JSIO, etc.
2) Deviations for K in tolerance grades above IT8 are not defined for basic sizes greater than 3 mm.
3) Identical with JS7.
IS0 286-2 : 1988 (El
Table 9 - Limit deviations for holes M and N
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
Basic size
M
N
mm
I I I I
up to
Above and in- 3 4 5 6 7 8 9 10 7 / 8 1 91) 1 10’) / 11’)
3 4 5 6
,I. .A:--
- - -
- I 0+2 -4-4-7 -6,5 -7 5 4 2 0 0 0
- 9 I2 I6
- - -34 - 52 9,5 -IO,5 -12 - I3 - I6
- - 20 - 30 - 48 - 75
- 3 0 + I -6 - 6
-9 -8,5 -8 - 7 - 4 - 3 0 0 0
6 10
- I2
- I5 - 21 -42 -64 -II,5 -12,5 -14 -16 -19 -25 -36 -58 -90
I I- I
- 4 0 ~+ 2 -7 -7
-II -10 -9 -9-5-3 0 0 0
10 18
+
- I5 - I8 - 25 -50 -77 -14 -15 -17 -20 -23 -30 -43 -70
-110
I
I
- 4 0 + 4 -8 - 8
18 30
- I7 - 21
- 29 -60 - 92
I
- 4 0 + 5 -9 -9 -15,5 -14
-13 -12 - 8 - 3 0 0
- 20 - 25 -34 -71 -109 -19,5 -21 -24 - 28 - 33 - 42 ' - 62 -100 -160
+
- 5 0 + 5
-15 -14 - 9 - 4 0 0 0
50 80
-19 -24 -30
- 41 -28 -33 -39 -50 - 74 -120 -190
-8
- 6 0 + 6 -18 - I6 -10 - 4 0 0 0
80 120
-23 - 28 - 35 -48 -33 -38 -45 -58
- 87 -140 -220
-9 - 8 0 + 8 -21 - 20 -12 - 4 0 0
120 180
-27 -33 -40 - 55 -39
- 45 - 52 - 67 -100 -160 -250
-II - 8 0 + 9 -25 -22 -14 - 5
0 0 0
180 250
-31 -37 -46 -63
-45 -51 -60 -77 -115 -185 -290
-13 - 9 0 + 9
-27 -25 - 141- 5 0 0 0
250 315
-36 - 41 - 52 - 72
-50 -57 - 661-86 -130 -210 -320
- IO 0 + II
-30 - 26 -16 - 5 0 0 0
-46 - 57 - 78 -55 - 62 - 73 - 94 -140 -230 -360
-T-
- IO 0 +I1
-33 - 27 -17 - 6 0 0 0
-50 -63
-86 I -60 - 67
- 80 -103 -155 -250 -400
-
c9n I - 26 - 26 - 26 1 I 441-d-441 ~ ~~~ --I 44 I
-- --
-70 -96 -136 - 88 -114 -I& -219
-30 -30 -30
-50 -50 -50 -50
630 800
-80 -110 -155 -100 -130 -I75 -250
-34 -34 -34
-56 -56 -56 -56
800 1000
-90 -124 -174 -112 -146 -196 -286
-40
-40 -40 -66 -66 -66 -66
1 000 1 250
-106 -145 -205 -132 -171 -231 -326
-48 -48 -48 - 78 - 78 - 78 - 78
1 250 1600
-126 -173 -243 -156 -203 -273 -388
-58 -58 -58 - 92 - 92 - 92 - 92
1600 2000
-150 -208 -288 -184 -242 -322 -462
-68 -68 -68 -110 -110 -110 -110
2000 2500
-I78 -243 -348 -220 -285 -390 -550
- 76 - 76 - 76
-135 -135 -135 -135
2500 3 150
-211 -286 -406 -270 -345 -465 -675
i
1) Tolerance classes N9, N10 and Nil shall not be used for basic sizes less than or equal to 1 mm.

ISO286-2:1988(E)
Table 10 -
Limit deviations for holes P
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
Basic size
P
mm
up to
Above and in- 3 4 5
6 7 8 9 10
eluding
-6
-6 -6 -6 -6 -6 -6
-6
- 3
-8 -9 -10 - I2
- I6 - 20 -31 -46
3 6
-II -IO,5 -'I 9 8
- - - I2 - I2 - I2
-13,5 -14,5 -16
- I7 - 20 - 30 -42 -60
6 IO -14 -13,5 -13 -12
-9 - I5 - I5 - I5
-16,5 -17,5
-19 - 21 - 24 - 37 - 51
- 73
10 18 -17 -16
-15 - I5 - II - I8 - I8
- I8
-20
-21 -23 -26 -29 - 45
-61 -88
18 30 -20,5 -20
-19 - I8 -14 -22 -22
-22
-24,5 -26 -28 - 31 - 35 - 55
- 74 -106
30 50
-24,5 -23 -22 21 I7
- - - 26 - 26 - 26
-28,5 -30 -33
- 37 - 42 -65 -88 -126
50 80 -27
- 26 - 21 -32 -32
-40 - 45 - 51 - 78
-106
80 120
-32 - 30 - 24 - 37
- 37
-47 -52
-59 - 91 -124
120 180 -37
- 36 -28 -43 -43
-55
-61 -68 -106 -143
180 250
-44 -41 -33 -50 -50
-64 - 70 - 79 -122 -165
250 315
-49 - 47 -36 -56 -56
-72 -79 -88 -137
-186
315 400
-55 - 51 - 41 - 62 - 62
-80 -87 -98 -151
-202
400 500
-61 - 55 -45 -68
-68
-88 - 95 -108
-165 -223
500 630
- 78 - 78 - 78 - 78
-122 -148
-188 -253
630 800
-88 -88 -88
-88
-138
-168 -213 -288
1 000 -100
-100 -100 -100
-156 -190 -240 -330
1000 1 250
-120 -120 -120 -120
-186 -225 -285
-380
1 250 1600
-140 -140 -140 -140
-218 -265 -335
-450
1600 2000
-170 -170 -170
-170
-262 -320 -400 -540
2000 2500
-195 -195 -195
-195
-305
-370 -475 -635
2500 3 150
-240 -240 -240
-240
-375 -450 -570 -780
a
ISO286-2:1988(E)
Table 11 - Limit deviations for holes R
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
Basic size
R
I I I
mm
up to
t
I Above andin- 3 4 5 6 7 8 9 10
eluding
-10 -10 - IO - IO - IO - IO -10 - IO
- 3
-12 -13 - I4 - I6 - 20 - 24 -35 -50
3 6 -14 -13,5 - I4 - I2 - II - I5 -15 - I5
-16,5 -17,5 - I9 - 20 -23 -33 -45 -63
- -
6 10 -18 -17,5 I7 I6 - I3 - I9 -19 - I9
-20,5 -21,5 - 23 - 25 - 28 - 41 -55 -77
IO I8 1; -21 - 20 - 20 - I6 - 23 -23 - 23 -185 -185
-185
710 800
-26 - 28 -31 -34 -50 -66 - 93 -235 -265 -310
18 30 -26,5 -26 - 25 - 24 - 20 - 28 -28 - IO
-210 -210 -210
800 900
-30,5 -32 -34 - 37 - 41 - 61 -80 -112 -266 -300 -350
30 50 -32,5 -31 - 30 - 29 -25 -34 -34 -34
-220
goo 1000 1; 1:
-36,5 -38 - 41 -45 -50 -73 -96 -134 -360
- -
50 65 36 35 - 30 - 41 -250 -250 -250
1000 1 120
-49 -54 -60 - 87 -316
-355 -415
65 80 -38 - 37 -32 -43
-51 -56 -62 -89
80 100 -46 -44 -38 - 51
’ 250 1 ’ 400 1 1;: 1 1:: / IG
-61 -66 - 73 -105
100 120 - 49 - 47 -41 -54
1400 1600 -m -330 -330
-64 - 69 - 76 -108
-408 -455 -525
120 140 -57 -56 -48 -63
1600 1800 -370 -370 -370
- 75 -81 -88 -126
-462 -520 -600
140 160 -59 -58 -50 - 65
2000 Iz 1: 1:
-77 -83 -go -128
160 180 - 62 -61 -53 -68
2 000 2240 1: 1:
- 80 - 86 - 93 -131 1;
180 200 -71 -68 -60 - 77
2240 2500 1: I= I=
-
- 91 97 -106 -149
200 225 - 74 -71 -63 - 80
-94 -100 -109 -152
225 250 - 78 - 75 -67 -84
-98 -104 -113 -156
250 280 - 87 - 85 -74 -94
-110 -117 -126 -175
280 315 -91 -89 - 78 - 98
-114 -121 -130 -179
315 355 - 101 - 97 - 87 -108
-126 -133 -144 -197
355 400 -107 -103 - 93 -114
-132 -139 -150 -203
400 450 -119 -113 -103 -126
-146 -153 -166 -223
450 500 -125 -119 -109 -132
-152 -159 -172 -229
IS0 286-2 : 1988 (El
Table 12 - Limit deviations for holes S
Upper limit deviation = ES
Lower limit deviation = EI
Deviations in micrometres
Basic size
Basic size
S
S
I I 1
mm
I mm
I I
I I I I
up to
up to
Above and in- 3 7 8 9 10
Above and in- 6 7 8
cludina
141516/ I eluding
-14 -14 - I4 - I4 - I4 - I4 - I4 - I4 500 560 - 280 - 280 - 280
- 3
- 20 - 24 -28 -39 -54 - 324 -350 -390
-16 -17 - I8
- I6 - I5 - I9 - I9 - I9 - 310 - 310 - 310
3 6 -18 -17,5 - I8 560 630
- 49 - 67
-20,5 -21,5 - 23 - 24 - 27 - 37 - 354 - 380 - 420
...