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ISO Tolerances

ISO Tolerances for Holes(ISO 286-2)- 400mm to 3150 mm

Limits in μm (10-6 m)
Nominal Hole sizes
Over 400 500 630 800 1000 1250 1600 2000 2500
Inclusive 500 630 800 1000 1250 1600 2000 2500 3150
E6 +175
+135
+189
+ 145
+210
+160
+ 226
+170'
+261
+195
+298
+220
+332
+240
+360
+260
+420
+290
E7 +198
+135
+215
+145
+ 240
+160
+260
+170'
+300
+195
+345
+220
+390
+240
+435
+260
+500
+290
E8 + 232
+135
+255
+145
+285
+160
+310
+170
+360
+195
+415
+220
+470
+240
+540
+260
+620
+290
E9 +290
+135
+320
+145
+360
+160
+400
+170
+455
+195
+530
+ 220
+ 610
+240
+700
+260
+830
+290
E10 +385
+135
+425
+145
+480
+160
+ 530
+ 170
+615
+195
+720
+220
+840
+240
+960
+260
+1150
+290
F6 +108
+68
+120
+76'
+130
+80
+142
+86]'
+164
+98
+ 188
+110
+212
+120
+240
+130
+280
+145
F7 +131
+68
+146
+76'
+ 160
+80
+ 176
+86]'
+ 203
+98
+ 235
+110
+270
+120
+305
+130
+355
+145
F8 +165
+68
+ 186
+76'
+205
+80
+ 226
+86]'
+263
+98
+305
+110
+350
+120
+410
+130
+475
+145
G6 +60
+20
+66
+22
+74
+24
+82
+26
+94
+28
+108
+30'
+124
+32
+144
+34
+173
+38
G7 +83
+20
+92
+22
+ 104
+24
+116
+26
+133
+28
+ 155
+30'
+182
+32
+209
+34
+248
+38
G8 +117
+20
+132
+22
+ 149
+24
+166
+26
+193
+28
+225
+30'
+262
+32
+314
+34
+368
+38
H6 +40
0
+44
0
+50
0
+56
0
+66
0
+78
0
+92
0
+110
0
+135
0
H7 +63
0
+70
0
+ 80
0
+ 90
0
+105
0
+ 125
0
+150
0
+175
0
+210
0
H8 +97
0
+110
0
+125
0
+140
0
+165
0
+195
0
+230
0
+ 280
0
+330
0
H9 +155
0
+175
0
+200
0
+230
0
+260
0
+310
0
+370
0
+ 440
0
+540
0
H10 +250
0
+280
0
+320
0
+360
0
+420
0
+500
0
+600
0
+700
0
+860
0
H11 +400
0
+ 440
0
+500
0
+560
0
+660
0
+780
0
+920
0
+1100
0
+1350
0
JS6 +/-20 +/-22 +/-25 +/-28 +/-33 +/-39 +/-46 +/-55 +/-67,5
JS7 +/-31,5 +/-35 +/-40 +/-45 +/-52,5 +/-62,5 +/-75 +/-87,5 +/-105
JS8 +/-48,5 +/-55 +/-62,5 +/-70 +/-82,5 +/-97,5 +/-115 +/-140 +/-165
K6 +8
-32
+ 0
-44
+ 0
-50
+ 0
- 56'
+ 0
-66
+ 0
-78
+ 0
-92
+ 0
-110
+ 0
-135
K7 +18
-45
+ 0
- 70'
+ 0
-80
+ 0
- 90'
+ 0
-105
+ 0
-125
+ 0
150-
+ 0
175-
+ 0
-210
K8 + 29
-68
+ 0
-110
+ 0
-125
+ 0
-140
+ 0
-165
+ 0
-195
+ 0
-230
+ 0
-280
+ 0
-330
M6 -10
-50
-26
-70
-30
-80
-34
-90
-40
-106
-48
-126
-58
-150
-68
-178
-76
-211
M7 0
-63
-26
-96
-30
-110
-34
-124
-40
-145
-48
-173
-58
-208
-68
-243
-76
-286
M8 + 11
-86
-26
-136
-30
-155
-34
-174
-40
-205
-48
-243
-58
-288
-68
-348
-76
-406
N6 -27
-67
-44
-88
-50
-100
-56
- 112
-66
-132
-78
-156
-92
-184
-110
- 220
-135
-270
N7 -17
-80
-44
-114
-50
-130
-56
- 146
-66
-171
-78
-203
-92
-242
-110
- 285
-135
-345
N8 -6
-103
-44
-154
-50
-175
-56
- 196
-66
-231
-78
-273
-92
-322
-110
-390
-135
-465
P6 -55
-95
-78
-122
-88
-138
-100
-156
-120
- 186
-140
-218
-170
-262
-195
-305
-240
-375
P7 -45
-108
-78
-148
-88
-168
-100
- 190
-120
-225
-140
-265
-170
-320
-195
-370
-240
-450
P8 -68
-165
-78
-188
-88
-213
-100
-240
-120
- 285
-140
335-
-170
-400
-195
- 475
-240
-57
Over 400 500 630 800 1000 1250 1600 2000 2500
Inclusive 500 630 800 1000 1250 1600 2000 2500 3150
Nominal Hole sizes

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Last Updated 17/07/2007