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Standard tolerence

Dimensional tolerance for round, square and hexagonal rod and wire

   Tolerances'  
Nominal sizesRound rod (diameter) and wirebSquare and hexagonal rod and wire (width across-flats)
overup to and includingClass AClass BClass AClass B
2c30± 0,03--
-0,06
360± 0,04± 0,06
-0,08--0,12
6100± 0,05±0,08
-0,09-0,15
10180± 0,06± 0,09
-0,11-0,18
18300± 0,07± 0,11
-0,13-0,21
30500± 0,08± 0,13
-0,16-0,25
50800± 0,10± 0,15
-0,19-0,30
801200± 0,18± 0,27
- 0,30-0,54
1201600± 0,30± 0,32
- 0,60-0,63

a: The tolerance specified are based on ISO h11 or ISO h13 for class A( minus tolerance only) and on ISO js11 or ISO js 13 for class B(plus/minus tolerances.)
b:The circularity (see 3.3) is included in the tolerance on diameter and shall not exceed half the tolerance specified above.
c:Including 2


Tolerance on width and thickness of bar and rectanglular wire

Nominal widths Tolerance on widthTolerance on nominal thicknessfor range of thickness    
overup to and including
From 0,5 up to and Including 3Over 3 up to and including 10over 6 up to and including 10over 10 up to and including 18over 18 up to and including 30over 30 up to and including 40
1 b10± 0,08± 0,05± 0,06± 0,08---
1018±0,10±0,05±0,06±0,08±0,10--
1830± 0,15± 0,05± 0,07± 0,09± 0,10± 0,15-
3050± 0,20± 0,06± 0,09± 0,10± 0,12± 0,15± 0,20
5080±0,25±0,09±0,10±0,12±0,15±0,18±0,25
80120± 0,30-± 0,12± 0,15± 0,18± 0,23± 0,30
120160± 0,40--± 0,18± 0,20± 0,25± 0,35
160200± 0,50--± 0,20± 0,25± 0,30± 0,40

a: where the ratio nominal thickness is grater than 20:1, tolerance shall be agreed between the purchaser and the supplier
b: Including 1.

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