孔的基本偏差数值
公称尺寸mm大于361014182430405065801001201401601802002252502803153554004505005606307108009001000112012501400160018002000224025002800至3610141824304050658010012014016018020022525028031535540045050056063071080090010001120125014001600180020002240250028003150基本偏差数值下偏差EIμm所有标准公差等级CGH60207040805095110120130140150170180200210230240260280300330360400440480679101200000IT6JS25568101316IT7J4681012141822IT8610121520242834上偏差ESμm≤IT8IT8≤IT8KM0021△4△1△6△1△2△2△2△3△7△8△9△11△13△
A27027028029030031032034036038041046052058066074082092010501200135015001650
B140140150150160170180190200220240260280310340380420480540600680760840
14
0
18
26
41
3△△44△4△5△00000000
15△
151718202224262830323438
000000000000偏差±IT
2式中IT
是IT值数
22252933
30363943
47556066
17△20△21△23△2630344048586876
f孔
公称尺寸mm
≤IT8IT8N4408△010△12△15△17△20△23△00000≤IT7P至ZCIT8M2467891113
上偏差ESμm
大于36101418243040506580100120140160180200225250280315355400450
至36101418243040506580100120140160180200225250280315355400450500
P6121518222632374350566268
R101519232834414351546365687780849498108114126132
S1419232835435359717992100108122130140158170190208232252
T414854667591104122134146166180196218240268294330360
基本偏差数上极限偏差标准公差等级大U182328334148607087102124144170190210236258284315350390435490540
15
27△
0
172021232630344048586876
31△
0000在大于IT7的相应数值上增加一个△值
34△37△40△445056667892110135
注1：基本尺寸小于或等于1mm时，基本偏差A和B及大于IT8的N均不采用。公差带注2：对小于或等于IT8的K、M、N和小于或等于IT7的P至ZC，所需△值从表内右
f孔的基本偏差数值
基本偏差数值上极限偏差ES标准公差等级大于IT7VXYZZAZB2026324028354250344252674050649039456077108475463739813655647588118160688094112148200819711413618024210212214417222630012014617421027436014617821425833544517221025431r