単位　μm孔尺寸公差表基准超出ー36101418243040506580100尺寸（mm)以下36101418243040506580100120B10+180+188+208+220+244+270+280+310+320+360+380+140+140+150+150+160+170+180+190+200+220+240＋116C9+85+100+138+162+182+192+214+224+257+267+60＋７０+80+95+110+120+130+140+150+170+180C10+100+118+138+165+194+220+230+260+270+310+320+60+70+80+95+100+120+130+140+150+170+18+34+48+62+77+98+119+146+174Ｄ8+20+30+40+50+68+80+100+120D9+45+60+76+93+117+142+174+207+20+30+40+50+65+80+100+120D10+60+78+98+120+149+180+220+260+20+30+40+50+65+80+100+120E7+24+32+40+50+61+75+90+107+14+20+25+32+40+50+60+72E8+28+38+47+59+73+89+106+126+14+20+25+32+40+50+60+72E9+39+50+61+75+92+112+134+159+14+20+25+32+40+50+60+72F6+12+18+22+27+33+41+49+58+6+10+13+16+20+25+30+36F7+16+22+28+34+41+50+60+71+6+10+13+16+20+25+30+36F8+20+28+35+43+53+64+76+90+6+10+13+16+20+25+30+36G6+8+12+14+17+20+25+9+29+34+2+4+5+6+7+10+12G7+12+16+20+28+25+34+40+47+2+4+5+6+7+9+10+12H6+6+8+9+11+13+16+19+2200000000H7+10+12+15+18+21+25+30+3500000000H8+14+18+22+27+33+39+46+54000000

标准公差数值公差等级基本尺寸IT4IT5IT6IT7IT8IT9IT10IT11IT12(um)≤33461014254060100>3~64581218304875120>6~104691522365890150>10~18581118274370110180>18~30691321335284130210>30~5071116253962100160250>50~8081319304674120190300>80~120101522355487140220350>120~1801218254063100160250400>180~2501420294672115180290460>250~3151623325281130210320520>315~4001825365789140230360570>400~5002027406397155250400630>500~63022324470110170280440700>630~80025365080125200320500800>800~100029405690140230360560900>1000~12503347661051652604206601050>1250~16003955781251953105007801250>1600~20004665921502303706009201500>2000~2500557811017528044070011001750>2500~3150689613521033054086013502100>3150~400084115165260410660105016502600>4000~5000100140200320500800130020003200>5000~6300125170250400620980155025004000>6300~80001552153104907601200195031004900>8000~100001952703806009401500240038006000基孔制优先、常用配合轴基准defghjskmnp孔间隙配合过渡配合过盈配合H6H6/f5H6/g5H6/h5H6/js5H6/k5H6/m5H6/n5H6/p5H7H7/f6H7/g6H7/h6H7/js6H7/k6H7/m6H7/n6H7/p6H8/e7H8/f7H8/g7H8/h7H8/js7H8/k7H8/m7H8/n7H8/p7H8H8/d8H8/e8H8/f8H8/h8H9H9/d9H9/e9H9/f9H9/h9H10H10/d10H10/h10

1.线性尺寸的极限偏差数值（GB/T1804-2000）（mm）公差等级基本尺寸分段0.5~33~66~3030~120120~400400~10001000~2000精密f±0.05±0.05±0.1±0.15±0.2±0.3±0.5中等m±0.1±0.1±0.2±0.3±0.5±0.8±1.2粗糙e±0.2±0.3±0.5±0.8±1.2±2±3最粗v--±0.5±1±1.5±2.5±4±62.倒圆半径和倒角高度尺寸的极限偏差（GB/T1804-2000）mm 公差等级基本尺寸分段0.5~33~66~3030精密f±0.2±0.5±1±2中等m粗糙e±0.4±1±2±4最粗v3.角度尺寸的极限偏差数值（GB/T1804-2000）公差等级基本尺寸分段~1010~5050~120120~400400精密f±1°±30±20±10±5中等m粗糙e±1°30±1°±30±20±10最粗v±3°±2°±1°±30±204.未注形位公差按GB/T1184-K 4.1 直线度和平面度未注公差值（GB/T1184-1996）（mm）公差等级基本长度范围1010~3030~100100~300300~10001000~3000H0.030.050.10.20.30.4K0.050.10.20.40.60.8L0.10.20.40.81.21.64.2 垂直度未注公差值（GB/T1184-1996）（mm）公差等级基本长度范围100100~300300~10001000~3000H0.20.30.40.5K0.40.60.81L0.411.524.3 对称度未注公差值（GB/T1184-1996）（mm）公差等级基本长度范围100100~300300~10001000~3000H0.5K0.60.81L0.611.524.4 圆跳动的未注公

标准公差表根据国际标准，以下为基本尺寸0-500mm, 4-18 级精度标准公差表。基本尺寸公差值IT4 IT5 IT6 IT7 IT8 IT9 IT10 IT11 IT12 IT13 IT14 IT15 IT16 IT17 IT18 大于到µm mm - 3 3 4 6 10 14 25 40 60 0.10 0.14 0.25 0.40 0.60 1.0 1.4 3 6 4 5 8 12 18 30 48 75 0.12 0.18 0.30 0.48 0.75 1.2 1.8 6 10 4 6 9 15 22 36 58 90 0.15 0.22 0.36 0.58 0.90 1.5 2.2 10 18 5 8 11 18 27 43 70 110 0.18 0.27 0.43 0.70 1.10 1.8 2.7 18 30 6 9 13 21 33 52 84 130 0.21 0.33 0.52 0.84 1.30 2.1 3.3 30 50 7 11 16 25 39 62 100 160 0.25 0.39 0.62 1.00 1.60 2.5 3.9 50 80 8 13 19 30 46 74 120 190 0.30 0.46 0.74 1.20 1.90 3.0 4.6 80 120 10 15 22 35 54 87 140 220 0.35 0.54 0.87 1.40 2.20 3.5 5.4 120 180 12 18 25 40 63 100 160 250 0.40 0.63 1.00 1.60 2.50 4.0 6.3 180 250 14 20 29 46 72 115 185 290 0.46 0.72 1.15 1.85 2.90 4.6 7.2 250 315 16 23 32 52 81 130 210 320 0.52 0.81 1.30 2.10 3.20 5.2 8.1 315 400 18 25 36 57 89 140 230 360 0.57 0.89 1.40 2.30 3.60 5.7 8.9 400 500 20 27 40 63 97 155 250 400 0.63 0.97 1.55 2.50 4.00 6.3 9.7注：基本尺寸小于1mm 时，无IT14 至IT18。参考医学线性尺寸未注公差的公差表根据国际标准，以下为线性尺寸未注公差的公差表

99+09+zs+Sb+68+EE+82+EZ+NDE+TE+2+EZ+ZZ+I+ST+ZI+sS+IS+Sb+8E+EE+82+bz+02+02+T+ST+ET+II+6+8++24+E9+SS+8b+Ib+DE+62+sz+W02+T+ST+ET+IT+6+8++9zs+9b+Ob+SE+08+sz+IZ+8T+02+T+ST+ET+II+6+8++sEb+E+EE+82+bz+02+I+ST+b+b+E+E+2+2+2+I+L 9S+05+Eb+8E+ZE+Z+EZ+6T+xb+E+E+E+z+z+z+I+998+EE+82+sz+TZ+ST+ST+ZT+b+b+E+E+z+2+z+I+s2+bZ+TZ+8T+ST+ET+II+6+OET-STT-00T-8-DL-29-ZS-Eb-6。 00。 18-24-89-bS-9b-6E-EE-Z-8。 4ZS-9b-0b-SE-08-SZ-12-8T-0。 000。 ZE-62-SZ-22-61-9T-ET-90000000。EZ-02-8T-St-ET--6-8-s00000。69-T9-DS-b-Ob-DE-82-忆一T-ST-bT-ZT-01-6-L-9-6b-比一68-DE-62-SZ-02-LI-

公差值基本尺寸IT4IT5IT6IT7IT8IT9IT10T111IT12IT13IT14IT15大于IT16到IT17TT18μmmm334_610142540600.100.140.250.400.6031.061.445812183048750.120.180.300.480.751.26101.846915223658900.150.220.360.580.90101.51852.2811182743701100.180.270.430.701.10181.83062.7913213352841300.210.330.520.841.302.1305073.311162539621001600.250.390.621.001.602.5508083.913193046741201900.300.460.741.201.90803.01204.61015223554871402200.350.540.871.402.201203.5180125.4182540631001602500.400.631.001.602.504.0180250146.3202946721151852900.460.721.151.852.902503154.67.216233252811302103200.520.811.302.103.205.23154008.118253657891402303600.570.891.402.303.604005.75008.920274063971552504000.630.971.552.504.006.39.7注:基本尺寸小于1mm时,无IT14至IT18。线性尺寸未注公差的公差表根据国际标准,以下为线性尺寸未注公差的公差表。这个未注公差适用于金属切削加工的尺寸,也适用于一般的冲压加工尺寸。这些极限偏差适用于:线性尺寸:例如外尺寸、内尺寸、阶梯尺寸、直径、半径、距离、倒圆半径和倒角高度;角度尺寸:包括通常不标出角度值的角度尺寸,例如直角(90°);机加工组装件的线性和角度

基本尺寸:mm大于至公差等级IT01IT0IT1IT2IT3IT4IT5IT6单位:mmIT7IT8IT9IT10IT11IT12IT13单位：IT14IT15IT16um03IT170.3IT180.50.81.2234单位:mm63106140.4250.6401601.50.12.50.1440.2550.4680.61210180.41301.40.6487511.50.122.50.180.3460.4890.7510151.218221.80.5360.8581.2900.1520.2230.36560.580.9111830181.52.2270.61431.5702.51100.1840.2760.4390.730131.121501.80.6332.75211.5841302.50.2140.3370.521.8411501.3162.125800.83.3391.262100231600.2550.3980.6213119801.62.5301204613.9741.51202.519040.360.460.7410151.21201.922351805431.24.68721403.522050.350.548120.87181.41802.2252503.54025.46310034.51607250100.40.6314201291.62502.54631542.5631156.34185629080.46120.72161.15231.85323152.9524004.68137.21305210793200.520.81131.3182.1254003.2365005.2574898.114062308360100.57150.89201.4272.3405003.6636305.7974.58.915562509400110.63160.97221.55302.5446307048006.351109.71757280104400.7131.75181.1252.835508004.410008075.512511820032011155000.8211.2529240563.21000590125081406.512.52309360560130.9181.424342.34612503.6665.6160010598165142601142015660211.05291.65402.6544.21600786.6200012510.519516.593101350018780251.25351.95483.16559220007.8250015012.523019.53701115226009201.530412.3573.777625001109.2

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1.线性尺寸的极限偏差数值(GB/T1804-2000)公差等级基本尺寸分段(mm)尺寸0.5~3>3~6>6~30>30~120>120~400>400~1000>1000~2000精密f±0.05±0.05±0.1±0.15±0.2±0.3±0.5中等m±0.1±0.1±0.2±0.3±0.5±0.8±1.2粗糙e±0.2±0.3±0.5±0.8±1.2±2±3最粗V..±0.5±1±1.5±2.5±4±62.倒圆半径和倒角高度尺寸的极限偏差(GB/T1804-2000)公差等级基本尺寸分段(mm)尺寸0.5~3>3~6>6~30>30精密f±0.2±0.5±1±2中等m粗糙e±0.4±1±2±4最粗v3.角度尺寸的极限偏差数值(GB/T1804-2000)公差等级基本尺寸分段(mm)尺寸~10>10~50>50~120>120~400>400精密f±1°±30±20±10±5中等m粗糙e±1°30±1°±30±20±10最粗v±3°±2°±1°±30±20

最新的标准公差等级表GB/T18042000线形尺寸的极限偏差数值公差等级基本尺寸分段0.53366303012012040040010001000200020004000精密f ±0.05 ±0.05 ±0.1 ±0.15 ±0.2 ±0.3 ±0.5中等m ±0.1 ±0.1 ±0.2 ±0.3 ±0.5 ±0.8 ±1.2 ±2粗糙c ±0.2 ±0.3 ±0.5 ±0.8 ±1.2 ±2 ±3 ±4最粗v ±0.5 ±1 ±1.5 ±2.5 ±4 ±6 ±8(GB/T18042000)倒圆半径和倒角高度尺寸的极限偏差数值公差等级基本尺寸分段0.533663030精密f ±0.2 ±0.5 ±1 ±2中等m 粗糙c ±0.4 ±1 ±2 ±4最粗v 注:倒圆半径和倒角高度的含义参见GB/T6403.4(GB/18042000)角度尺寸的极限偏差数值公差等级长度分段10105050120120400400精密f ±1°±30 ±20 ±10 ±5中等m 粗糙c ±1°30 ±1°±30 ±15 ±10最粗v ±3°±2°±1°±30 ±20(GB/T11841996)直线度和平面度的未注公差值公差等级基本长度范围10103030100100300300100010003000 H 0.02 0.05 0.1 0.2 0.3 0.4K 0.05 0.1 0.2 0.4 0.6 0.8L 0.1 0.2 0.4 0.8 1.2 1.6(GB/T11841996)垂直度未注公差值公差等级基本长度范围100100300300100010003000H 0.2 0.3 0.4 0.5K 0.4 0.6 0.8 1L 0.6 1 1.5 2(GB/T11841996)对称度未注公差值公差等级基本长度范围100100300300100010003000H 0.5

序号螺纹规格外螺纹大径公差内螺纹小径公差序号螺纹规格外螺纹大径公差内螺纹小径公差M4*0.510.1φ3.8φ3.3±0.1-0.0529M25*1.5φ24.7±0.10.15M5*0.752φ4.8±0.1φ4.3-0.150.0530M26*1.5φ25.7±0.1+0.15φ24.53M6*1φ5.8±0.1-0.05φ5.1±0.133M27*1.5φ26.7±0.1φ7.7-20.15M8*1.254φ25.5-0.05φ6.9±0.134M28*1.5φ27.7±0φ26.5-0.05φ9.7-0.0s5M10*1.5φ8.6-0.10535M30*1.5φ29.7±0.1.15φ11.6+0.26M12*1.75φ28.5-0.05φ10.4±0.136M31*1.5φ30.7±0.11.0φ7.7+0.17M8*1φ29.φ7+0.1537M32*1.5φ31.7±0.1十棵.........................φ9.7+0.1M10*1φ30.5-0.058φ9.1±0.138M33*1.5φ32.7±0.1+0.15φ31.5-0.05φ10.7+0.19M11*1φ10.1±0.139M34*1.5φ32.5-0.05φ33.7±0.110M12*1φ11.7±0.1φ11.1±0.140M35*1.5φ33.5-0.05φ34.7±0.111M14*1φ13.7±0.1φ13.1±0.1M36*1.541φ35.7±0.1+0.15φ34.5-0.0512M16*1φ15.7±0.1φ15.1±0.142M38*1.5φ37.7±0.1+0.1513φ36.5M18*1φ17.7±0.1-0.05φ17.1±0.143M39*1.5φ38.7±0.1+0.1514M20*1φ3φ19.7±0.1-0.05φ19.1±0.144M40*1.5φ39.7±0.10.1515M22*1φ38.φ21.7±0.1--11.(1)φ21.1±0.145M41*1.5φ4016M24*1φ23.7±0.1φ23.1±0.146M42*1.5217M26*1φ25.7±0.1φ25.1±0.147M45*1.5118M28*1φ27.7±0.1U.U.Sφ27.1±0.148M48*1.519M23*1φ22.7±0.1φ22.1±0.149M49*1.52

【孔】的尺寸公差表臣心一片磁针石，不指南方不肯休。文天祥单位：μm基准尺寸区分EFGNHJsKMP以下E7E8E9F6F7F8G6G7H6H7H8H9H10Js6Js7K6K7M6M7N6N7P6P7+32+38+50+18+22+28+12+18+8+1218+30+48+2+3-10-5-4-9-8上限36±4±6下限+20+20+20+10+10+10+4+400000-6-9-9-12-13-16-17-20+40+47+61+22+28+35+14+20+9+15+22+36+58+2+5-30-7-4-12-9上限610±4.5±7.5下限+25+25+25+13+13+13+5+500000+7-10-12-15-16-19-21-24+50+59+75+27+34+43+17+24+11+16+27+43+70+2+6-40-9-5-15-11上限1018±5.5±9下限+32+32+32+16+16+16+6+600000-7-10-12-15-16-19-21-24+61+73+92+33+41+53+20+28+13+21+33+52+84+2+6-40-11-7-18-14上限1830-±6.5±10.5下限+40+40+40+20+20+20+7+700000-11-15-17-24+28-31-35-35+75+89+112+41+50+64+25+34+16+25+39+62+100+3+7-40-12-8-21-17上限3050±8±12.5下限+50+50+50+25+25+25+9+900000-13-18-20-25-28-33-37-42+90+106+134+49+60+76+29+40+19+30+46+74+100+4+9-50-14-9-26-21上限5080±9.5±15下限+60+60+60+30+30+30+10+1000000-15-21-24-30-33-39-45-51+107+126+159+58+71+90+34+47+22+35+54+87+140+4+10-80-16-10-30-24上限80120±11±17.5下限+72+72+72+36+36+36+12+1200000-18-25-28-35-38-45-52-59【轴】的尺寸公差表单位：μmg基准尺寸区分efhjsjkmnp以下e7e8e9f6f7f8g5g6