Technical Reference
279
Tables for Determining Metric Tolerances
Table 5: Fundamental Deviations of Holes and Shafts Table 5 details fundamental deviations between holes and shafts, and is provided for reference.
GRADE
IT6 TO IT16
FUNDAMENTAL DEVIATIONS (LOWER DEVIATIONS)
FUNDAMENTAL DEVIATIONS (UPPER DEVIATIONS)
DIVISIONS
LETTER SYMBOLS D E
F +
G H
Js
K M N P
R –
S –
T –
U
SIGNS
+
+
+
–
–
–
–
UP TO
ABOVE
500 560 630 710 800 900
560 630 710 800 900
150 280 400 600 155 310 450 660 175 340 500 740 185 380 560 840 210 430 620 940 220 470 680 1050 250 520 780 1150 260 580 840 1300 300 640 960 1450 330 720 1050 1600 370 820 1200 1850 400 920 1350 2000 440 1000 1500 2300 460 1100 1650 2500 550 1250 1900 2900 580 1400 2100 3200
260 145 76
22
0
0
26
44
78
290 160 80
24
0
0
30
50
88
320 170 86
26
0
0
34
56
100
1000 1120 1250 1400 1600 1800 2000 2240 2500 2800 3150
1000 1120 1250 1400 1600 1800 2000 2240 2500 2800
350 195 98
28
0
0
40
66
120
DEVIATIONS (+/–) IT/2
390 220 110 30
0
0
48
78
140
430 240 120 32
0
0
58
92
170
480 260 130 34
0
0
68
110 195
520 290 145 38
0
0
76
135 240
UP TO
ABOVE
SIGNS
–
– e
–
– g
+
+
+ p
+
+ s
+
+ u
LETTER SYMBOLS d
f
h
js
k
m n
r
t
FUNDAMENTAL DEVIATIONS (UPPER DEVIATIONS)
FUNDAMENTAL DEVIATIONS (LOWER DEVIATIONS)
DIVISIONS
GRADE
IT6 TO IT16
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