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1、标准公差数值（摘自GB/T1800.3-1988)基本尺寸/mmIT01IT0IT1IT2IT3IT4IT5IT6IT7IT8IT9IT10IT11IT12IT13IT14IT15IT16IT17IT18大于至ummm030。30。50.81.2234610142540600。100。140。250.400。601。01。4360.40。611.52。545812183048750。120.180。300。480.751。21.86100。40。611.52。546915223658900.150.220。360。580。901.52。210180。50.81。2235811182743701
2、100。180.270.430。701。101.82。718300。611。52.546913213352841300.210.330.520。841。302.13。330500.611.52。54711162539621001600.250.390。621。001。602。53.950800。81。2235813193046741201900.300。460。741.201.903.04。68012011。52。5461015223554871402200。350。540.871。402.203。55.41201801。223.55812182540631001602500.400。631.
3、001。602.504。06。3180250234.571014202946721151852900。460.721.151.852。904。67.22503152.54681216233252811302103200。520.811.302。103。205.28.131540035791318253657891402303600。570.891。402。303。605。78.9400500468101520274063971552504000。630。971.552.504.006.39.750063091116223244701101752804400.701。101。752.84。47。
4、011.0630800101318253650801252003205000.801。252.003。25.08.012.58001000111521284056901402303605600.901.402。303。65.69.014。0100012501318243347661051652604206601.051。652。604.26。610。516。5125016001521293955781251953105007801.251.953.105.07.812.519。5160020001825354665921502303706009201。502.303。706。09.215.023。020002500223041557811017528044070011001.752。804。407。011.017。528。025003150263650689613521033054086013502。13.305。408.613。521。033.0注：基本尺寸小于或等于1mm时，无IT14至IT18。基本尺寸大于500mm的IT1至IT5的标准公差数值为试行。
标准公差表
