Appendix A
ANSI and ISO Tolerance Tables
This appendix lists the ANSI and ISO tolerance tables. The tables show the ANSI fits and their equivalent ISO symbols. The tolerance values are given for ranges of the basic sizes. All numbers in the tables are in inches. The tolerance values shown in the tables must be multiplied by 10-3.
Table A.1 Clearance Fits1
RC1 |
RC2 |
RC3 |
|||||||
Basic Size |
Limits of Clearance |
Standard Limits |
Limits of Clearance |
Standard Limits |
Limits of Clearance |
Standard Limits |
|||
Over–To |
Hole H5 |
Shaft g4 |
Hole H6 |
Shaft g5 |
Hole H7 |
Shaft f6 |
|||
0–0.12 |
0.1 0.45 |
+0.2 0 |
-0.1 -0.25 |
0.1 0.55 |
+0.25 0 |
–0.1 –0.3 |
0.3 0.95 |
+0.4 0 |
–0.3 –0.55 |
0.12–0.24 |
0.15 0.5 |
+0.2 0 |
-0.15 -0.3 |
0.15 0.65 |
+0.3 0 |
–0.15 –0.35 |
0.4 1.12 |
+0.5 0 |
–0.4 –0.7 |
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