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Size Tolerances (inches) |
|
|
Specified Sizes (inches) |
Over |
Under |
Out-of-Round or
Out-of-Square Section (inches) |
|
1/2 thru 5/8 |
0.007 |
0.007 |
0.010 |
|
Over 5/8 thru 7/8 |
0.008 |
0.008 |
0.012 |
|
Over 7/8 thru 1 |
0.009 |
0.009 |
0.013 |
|
Over 1 thru 1-1/8 |
0.010 |
0.010 |
0.015 |
|
Over 1-1/8 thru 1-1/4 |
0.011 |
0.011 |
0.016 |
|
Over 1-1/4 thru 1-3/8 |
0.012 |
0.012 |
0.018 |
|
Over 1-3/8 thru 1-1/2 |
0.014 |
0.014 |
0.021 |
|
Over 1-1/2 thru 2 |
1/64 |
1/64 |
0.023 |
|
Over 2 thru 2-1/2 |
1/32 |
0 |
0.023 |
|
Over 2-1/2 thru 3-1/2 |
3/64 |
0 |
0.035 |
|
Over 3-1/2 thru 4-1/2 |
1/16 |
0 |
0.046 |
|
Over 4-1/2 thru 5-1/2 |
5/64 |
0 |
0.058 |
|
Over 5-1/2 thru 6-1/2 |
1/8 |
0 |
0.070 |
|
Over 6-1/2 thru 8-1/4 |
5/32 |
0 |
0.085 |
|
Over 8-1/4 thru 9-1/2 |
3/16 |
0 |
0.100 |
|
Over 9-1/2 thru 10 |
1/4 |
0 |
0.120 |
•Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same transverse cross section. Out-of-square section is the difference in perpendicular distance between opposite faces, measured at the same transverse cross section.
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Variations from thickness, for thicknesses given over and under (inches) |
Variations from Width (inches) |
|
Specified Widths (inches) |
0.203 up to 0.230 |
0.230 up to 1/4 |
1/4 thru 1/2 |
Over 1/2 thru 1 |
Over 1 thru 2 |
Over 2 thru 3 |
Over 3 |
Over 3 |
Under |
|
Up thru 1 |
.007 |
.007 |
.008 |
.010 |
|
|
|
1/64 |
1/64 |
|
Over 1 thru 2 |
.007 |
.007 |
.012 |
.015 |
1/32 |
|
|
1/32 |
1/32 |
|
Over 2 thru 4 |
.008 |
.008 |
.015 |
.020 |
1/32 |
3/64 |
3/64 |
1/16 |
1/32 |
|
Over 4 thru 6 |
.009 |
.009 |
.015 |
.020 |
1/32 |
3/64 |
3/64 |
3/32 |
1/16 |
|
Over 6 thru 8 |
* |
.015 |
.018 |
.025 |
1/32 |
3/64 |
1/16 |
1/8 |
3/32** |
•Where appears there is no requirement.
*Fiats over 6 thru 8 in width are notavailable as hot-rolled carbon steel bars in thickness under 0.230.
**For flats over 6 thru 8 in width and thru 3 in thickness.
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