I.S. EN 20286-1:1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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ISO SYSTEM OF LIMITS AND FITS - BASES OF TOLERANCES, DEVIATIONS AND FITS
Hardcopy , PDF
10-05-2010
English
01-01-1994
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
National foreword
Committees responsible
Specification
0. Introduction
1. Scope
2. Field of application
3. References
4. Terms and definitions
5. Symbols, designation and interpretation of
tolerances, deviations and fits
6. Graphical representation
7. Reference temperature
8. Standard tolerances for basic sizes up to 3 150 mm
10. Bibliography
Annexes
A. Bases of the ISO system of limits and fits
B. Examples of the use of ISO 286-1
C. Equivalent terms
Tables
1. Numerical values of standard tolerance grades IT
for basic sizes up to 3 150 mm
2. Numerical values of the fundamental deviations of
shafts
3. Numerical values of the fundamental deviations of
holes
4. Basic size steps
5. Numerical values for standard tolerances in grades
IT01 and IT0
6. Formulae for standard tolerances in grades IT01,
IT0 and IT1 for basic sizes up to and including
500 mm
7. Formulae for standard tolerances in grades IT1 to
IT18
8. Rounding for IT values up to and including standard
tolerance grade IT11
9. Formulae for fundamental deviations for shafts and
holes
10. Rounding for fundamental deviations
Figures
1. Basic size, and maximum and minimum limits of size
2. Conventional representation of a tolerance zone
3. Clearance
4. Clearance fit
5. Transition fit
6. Interference
7. Interference fit
8. Schematic representation of clearance fits
9. Schematic representation of interference fits
10. Schematic representation of transition fits
11. Shaft-basis system of fits
12. Hole-basis system of fits
13. Schematic representation of the positions of
fundamental deviations
14. Deviations for shafts and holes
15. Graphical representation
16. Simplified schematic diagram
17. Deviations for shafts
18. Deviations for holes
19. Deviations js and JS
20. Diagrammatic representation of the rule given in
A.4.2 b)
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