孔A、B和C的极限偏差(GB/T 1800.4—1999)　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　mm

基本尺寸 /mm

A

B

C

大于

至

9

10

11

12

13

8

9

10

11

12

13

8

9

10

11

12

13

—

3

+295 +270

+310 +270

+330 +270

+370 +270

+410 +270

+154 +140

+165 +140

+180 +140

+200 +140

+240 +140

+280 +140

+74 +60

+85 +60

+100 +60

+120 +60

+160 +60

+200 +60

3

6

+300 +270

+318 +270

+345 +270

+390 +270

+450 +270

+158 +140

+170 +140

+188 +140

+215 +140

+260 +140

+320 +140

+88 +70

+100 +70

+118 +70

+145 +70

+190 +70

+250 +70

6

10

+316 +280

+338 +280

+370 +280

+430 +280

+500 +280

+172 +150

+186 +150

+208 +150

+240 +150

+300 +150

+370 +150

+102 +80

+116 +80

+138 +80

+170 +80

+230 +80

+300 +80

10

18

+333 +290

+360 +290

+400 +290

+470 +290

+560 +290

+177 +150

+193 +150

+220 +150

+260 +150

+330 +150

+420 +150

+122 +95

+138 +95

+165 +95

+205 +95

+275 +95

+365 +95

18

30

+352 +300

+384 +300

+430 +300

+510 +300

+630 +300

+193 +160

+212 +160

+244 +160

+290 +160

+370 +160

+490 +160

+143 +110

+162 +110

+194 +110

+240 +110

+320 +110

+440 +110

30

40

+372 +310

+410 +310

+470 +310

+560 +310

+700 +310

+209 +170

+232 +170

+270 +170

+330 +170

+420 +170

+560 +170

+159 +120

+182 +120

+220 +120

+280 +120

+370 +120

+510 +120

40

50

+382 +320

+420 +320

+480 +320

+570 +320

+710 +320

+219 +180

+242 +180

+280 +180

+340 +180

+430 +180

+570 +180

+169 +130

+192 +130

+230 +130

+290 +130

+380 +130

+520 +130

50

65

+414 +340

+460 +340

+530 +340

+640 +340

+800 +340

+236 +190

+264 +190

+310 +190

+380 +190

+490 +190

+650 +190

+186 +140

+214 +140

+260 +140

+330 +140

+440 +140

+600 +140

65

80

+434 +360

+480 +360

+550 +360

+660 +360

+820 +360

+246 +200

+274 +200

+320 +200

+390 +200

+500 +200

+660 +200

+196 +150

+224 +150

+270 +150

+340 +150

+450 +150

+610 +150

80

100

+467 +380

+520 +380

+600 +380

+730 +380

+920 +380

+274 +220

+307 +220

+360 +220

+440 +220

+570 +220

+760 +220

+224 +170

+257 +170

+310 +170

+390 +170

+520 +170

+710 +170

100

120

+497 +410

+550 +410

+630 +410

+760 +410

+950 +410

+294 +240

+327 +240

+380 +240

+460 +240

+590 +240

+780 +240

+234 +180

+267 +180

+320 +180

+400 +180

+530 +180

+720 +180

120

140

+560 +460

+620 +460

+710 +460

+860 +460

+1090 +460

+323 +260

+360 +260

+420 +260

+510 +260

+660 +260

+890 +260

+263 +200

+300 +200

+360 +200

+450 +200

+600 +200

+830 +200

140

160

+620 +520

+680 +520

+770 +520

+920 +520

+1150 +520

+343 +280

+380 +280

+440 +280

+530 +280

+680 +280

+910 +280

+273 +210

+310 +210

+370 +210

+460 +210

+610 +210

+840 +210

160

180

+680 +580

+740 +580

+830 +580

+980 +580

+1210 +580

+373 +310

+410 +310

+470 +310

+560 +310

+710 +310

+940 +310

+293 +230

+330 +230

+390 +230

+480 +230

+630 +230

+860 +230

180

200

+775 +660

+845 +660

+950 +660

+1120 +660

+1380 +660

+412 +340

+455 +340

+525 +340

+630 +340

+800 +340

+1060 +340

+312 +240

+355 +240

+425 +240

+530 +240

+700 +240

+960 +240

200

225

+855 +740

+925 +740

+1030 +740

+1200 +740

+1460 +740

+452 +380

+495 +380

+565 +380

+670 +380

+840 +380

+1100 +380

+332 +260

+375 +260

+445 +260

+550 +260

+720 +260

+980 +260

225

250

+935 +820

+1005 +820

+1110 +820

+1280 +820

+1540 +820

+492 +420

+535 +420

+605 +420

+710 +420

+880 +420

+1140 +420

+352 +280

+395 +280

+465 +280

+570 +280

+740 +280

+1000 +280

250

280

+1050 +920

+1130 +920

+1240 +920

+1440 +920

+1730 +920

+561 +480

+610 +480

+690 +480

+800 +480

+1000 +480

+1290 +480

+381 +300

+430 +300

+510 +300

+620 +300

+820 +300

+1110 +300

280

315

+1180 +1050

+1260 +1050

+1370 +1050

+1570 +1050

+1860 +1050

+621 +540

+670 +540

+750 +540

+860 +540

+1060 +540

+1350 +540

+411 +330

+460 +330

+540 +330

+650 +330

+850 +330

+1140 +330

315

355

+1340 +1200

+1430 +1200

+1560 +1200

+1770 +1200

+2000 +1200

+689 +600

+740 +600

+830 +600

+960 +600

+1170 +600

+1490 +600

+449 +360

+500 +360

+590 +360

+720 +360

+930 -360

+1250 +360

355

400

+1490 +1350

+1580 +1350

+1710 +1350

+1920 +1350

+2240 +1350

+769 +680

+820 +680

+910 +680

+1040 +680

+1250 +680

+1570 +680

+489 +400

+540 +400

+630 +400

+760 +400

+970 +400

+1290 +400

400

450

+1655 +1500

+1750 +1500

+1900 +1500

+2130 +1500

+2470 +1500

+857 +760

+915 +760

+1010 +760

+1160 +760

+1390 +760

+1730 +760

+537 +440

+595 +440

+690 +440

+840 +440

+1070 +440

+1410 +440

450

500

+1805 +1650

+1900 +1650

+2050 +1650

+2280 +1650

+2620 +1650

+937 +840

+995 +840

+1090 +840

+1240 +840

+1470 +840

+1810 +840

+577 +480

+635 +480

+730 +480

+880 +480

+1110 +480

+1450 +480

注：基本尺寸小于1mm时，各级的A和B均不采用。