OLM best Service Icon

First Class Customer Service as Strong as Our Metals!

Open for Orders 24/7!

  • Home
  • Aluminum Tolerances

Back to Tolerance Home Page


Aluminum Tolerances


 

Round Bars | Square Bars | Hex Bars | Rectangle Bars | Angle | Architectural Channel | Sheet/Plate | Tread Plate | Round Tubes | Square Tubes | Rectangle Tubes | Pipe

 

 

 

 

 

 

 

Round Bars
Alloy(s)    Spec. Diameter, in.  Diameter Tol. (over(+)/under(-))
 2011-T3, 2024-T4, 6061(-T6/T651)  Cold Finish  0.125 to 0.374  +/- 0.0015"
 2011-T3, 2024(-T351/T4), 6061(- T6/T651)  Cold Finish  0.375 to 0.500  +/- 0.0015"
 2011-T3, 2024-T351, 6061-T651, 7075-T7351  Cold Finish  0.501 to 1.000  +/- 0.002"
 2011-T3, 2024-T351, 6061-T651, 7075- T651, 7075-T7351  Cold Finish  1.001 to 1.500  +/- 0.0025"
 2011-T3, 2024-T351, 6061-T651, 7075- T651, 7075-T7351  Cold Finish  1.501 to 2.000  +/- 0.004"
 2011-T3, 2024-T351, 6061-T651, 7075-T651, 7075-T7351  Cold Finish  2.001 to 3.000  +/- 0.006"
 2011-T3, 2024-T351, 6061-T651, 7075-T651, 7075-T7351  Cold Finish  3.001 to 3.499  +/- 0.008"
 2011-T3, 2024-T351, 6061-T651, 7075-T651, 7075-T7351  Cold Finish  3.500 to 5.000  +/- 0.012"
 2024-T351, 6061-T651, 7075-T651, 7075-T7351  Cold Finish  5.001 to 6.000  +/- 0.020"

 

 

Straightness Tolerance - Cold Finished Round Bar
Temper   Spec. Diameter, in. Max. Allowed Deviation from Straight
All except: TX51 Cold Finish All 0.025 × Measured length, ft.
TX51 Cold Finish 0.500 and over 0.025 × Measured length, ft.
Straightness tolerance will be void once full length is cut


 

Round Bars
Alloy(s)    Spec. Diameter, in.  Diameter Tol. (over(+)/under(-))
 6061-T6511  Extruded  0.125 to 0.249  +/- 0.007"
 6061-T6511, 6063(-T5/52)  Extruded  0.250 to 0.499  +/- 0.008"
 6061-T6511, 6063-T52, 6262-T6511  Extruded  0.500 to 0.749  +/- 0.009"
 6061-T6511, 6063-T52, 6262-T6511  Extruded  0.750 to 0.999  +/- 0.010"
 6061-T6511, 6063-T52, 6262-T6511  Extruded  1.000 to 1.499  +/- 0.012"
 6061-T6511, 6063-T52, 6262-T6511  Extruded  1.500 to 1.999  +/- 0.014"
 2011-T3, 6061-T6511, 6262-T6511  Extruded  2.000 to 3.999  +/- 0.024"
 6061-T6511  Extruded  4.000 to 5.999  +/- 0.034"
 6061-T6511, 7075-T651  Extruded  6.000 to 7.999  +/- 0.044"
 6061-T6511, 7075-T651  Extruded  8.000 to 9.999  +/- 0.064"
 6061(-T6/T6511)  Extruded  10.000 to 11.999  +/- 0.074"
 6061-T6511  Extruded  12.000 to 13.999  +/- 0.084"
 6061(-T6/T6511)  Extruded  14.000 to 15.999  +/- 0.094"
 6061-T6511  Extruded  16.000 to 17.999  +/- 0.104"
 6061(-T6/T6511)  Extruded  18.000 to 19.999  +/- 0.114"
 6061-T6  Extruded  20.000 to 21.999  +/- 0.124"

 

 

Metric Round Bar
Alloy(s)    Spec. Diameter, mm  Diameter Tol. (over(+)/under(-))
 6060 (metric)  Extruded  From 8 to 18, incl.   +/- 0.22mm
 6060 (metric)  Extruded  Over 18 to 25, incl.  +/- 0.25mm
 6060 (metric)  Extruded  Over 25 to 40, incl.  +/- 0.30mm
 6060 (metric)  Extruded  Over 40 to 50, incl.  +/- 0.35mm

 

 

Straightness Tolerance - Extruded Round Bar
Temper   Spec. Diameter, in. Max. Allowed Deviation from Straight
All except: TX511 Extruded All 0.0125 × Measured length, ft.
TX511 Extruded 0.500 and over 0.0125 × Measured length, ft.
Straightness tolerance will be void once full length is cut

 

 

 

 

 

 

 

Square Bar
Alloy(s)    Spec. Square, in.  Square Tol. (over(+)/under(-))
 2024-T351  Cold Finish  0.375 to 0.500  +/- 0.002"
 2024-T351, 7075-T651  Cold Finish   0.501 to 1.000  +/- 0.0025" 
 2024-T351, 7075-T651  Cold Finish   1.001 to 1.500  +/- 0.003" 
 2024-T351  Cold Finish   1.501 to 2.000  +/- 0.005" 
 2024-T351   Cold Finish   2.001 to 3.000  +/- 0.008" 
 2024-T351   Cold Finish   3.001 to 4.000  +/- 0.010" 
 6061-T6511, 6063-T52  Extruded  0.250 to 0.499  +/- 0.008"
 6061-T6511, 6063-T52  Extruded  0.500 to 0.749  +/- 0.009"
 6061-T6511, 6063-T52  Extruded  0.750 to 0.999  +/- 0.010"
 6061-T6511, 6063-T52  Extruded  1.000 to 1.499  +/- 0.012"
 6061-T6511, 6063-T52  Extruded  1.500 to 1.999  +/- 0.014"
 6061-T6511, 6063-T52  Extruded  2.000 to 3.999  +/- 0.024"
 6061-T6511, 6063-T52  Extruded  4.000 to 5.999  +/- 0.034"
 6061-T6511, 6063-T52  Extruded  6.000 to 7.070  +/- 0.044"

 

 

Straightness Tolerance - Cold Finished Square Bar
Temper   Spec. Height, in. Max. Allowed Deviation from Straight
All except: TX51 Cold Finish All 0.025 × Measured length, ft.
TX51 Cold Finish 0.500 and over 0.050 × Measured length, ft.
Straightness tolerance will be void once full length is cut

 

 

Straightness Tolerance - Extruded Square Bar
Temper   Spec. Height, in. Max. Allowed Deviation from Straight
All except: TX511 Extruded All 0.0125 × Measured length, ft.
TX511 Extruded 0.500 and over 0.0125 × Measured length, ft.
Straightness tolerance will be void once full length is cut

 

 

 

 

 

 

 

Hex Bar
Alloy(s)    Spec. Across Flats, in.  Across Flats Tol. (over(+)/under(-))
 2011-T3  Cold Finish  0.065 to 0.374  +/- 0.002"
 2011-T3, 7075-T7351  Cold Finsh  0.375 to 0.500  +/- 0.002" 
 2011-T3, 2024-T351, 7075-T7351  Cold Finish  0.501 to 1.000  +/- 0.0025" 
 2024-T351, 7075-T7351  Cold Finish  1.001 to 1.500  +/- 0.003"
 2024-T351  Cold Finish  1.501 to 2.000  +/- 0.005"
 6061(-T6/T6511)  Extruded  0.250 to 0.499  +/- 0.008"
 6061-T6511  Extruded  0.500 to 0.749   +/- 0.009"
 6061-T6511, 6262-T6511  Extruded  0.750 to 0.999   +/- 0.010" 
 6061-T6511, 6262-T6511  Extruded  1.000 to 1.499   +/- 0.012" 
 6061-T6511  Extruded  1.500 to 1.999  +/- 0.014"

 

 

Straightness Tolerance - Cold Finished Hex Bar
Temper   Spec. Across Flats, in. Max. Allowed Deviation from Straight
All except: TX51 Cold Finish All 0.025 × Measured length, ft.
TX51 Cold Finish 0.500 and over 0.025 × Measured length, ft.
Straightness tolerance will be void once full length is cut

 

 

Straightness Tolerance - Extruded Hex Bar
Temper   Spec. Across Flats, in. Max. Allowed Deviation from Straight
All except: TX511 Extruded All 0.0125 × Measured length, ft.
TX511 Extruded 0.500 and over 0.0125 × Measured length, ft.
Straightness tolerance will be void once full length is cut

 

 

 

 

 

 

 

Rectangle Bar
Alloy(s)    Spec. Thick, in.  Thick Tol. (over(+)/under(-))  Spec. Width, in.  Width Tol. (over(+)/under(-))
 2024-T4, 7075- T6  Cold Finish 0.065 to 0.500  +/- 0.002"  0.065 to 0.500  +/- 0.002"
 2024(-T351/T4), 7075-T651  Cold Finish  0.501 to 0.750  +/- 0.0025"  0.501 to 0.750  +/- 0.0025"
 2024(-T351/T4), 7075-T651  Cold Finish  0.751 to 1.000  +/- 0.0025"  0.751 to 1.000  +/- 0.0025"
 2024(-T351/T4), 7075-T651  Cold Finish  1.001 to 1.500   +/- 0.003" 1.001 to 1.500  +/- 0.003"
 2024(-T351/T4), 7075-T651  Cold Finish  1.501 to 2.000   +/- 0.005" 1.501 to 2.000  +/- 0.005"
 2024(-T351/T4), 7075(-T6/T651)  Cold Finish  2.001 to 3.000  +/- 0.008" 2.001 to 3.000  +/- 0.008"
 2024(-T351/T4), 7075-T651  Cold Finish  ...  ... 3.001 to 4.000  +/- 0.010"
 2024-T351, 7075-T651  Cold Finish  ...  ... 4.001 to 6.000  +/- 0.020"

 

 

Straightness Tolerance - Cold Finished Rectangle Bar
Temper   Spec. Thickness, in. Max. Allowed Deviation from Straight
All except: TX51 Cold Finish All 0.025 × Measured length, ft.
TX51 Cold Finish 0.500 and over 0.050 × Measured length, ft.
Straightness tolerance will be void once full length is cut

 

 

Rectangle Bar
Alloy(s)    Spec. Thick, in.  Thick Tol. (over(+)/under(-))  Spec. Width, in.  Width Tol. (over(+)/under(-))
 6061-T6511, 6063(-T5/52)  Extruded  Up thru 0.124  +/- 0.006"  Up thru 0.124  +/- 0.006"
 6061-T6511, 6063(-T5/52)  Extruded  0.125 to 0.249  +/- 0.007"  0.125 to 0.249  +/- 0.007"
 6061-T6511, 6063(-T5/52)  Extruded  0.250 to 0.499  +/- 0.008"   0.250 to 0.499  +/- 0.008"
 6061-T6511, 6063(-T5/52)  Extruded  0.500 to 0.749  +/- 0.009"  0.500 to 0.749  +/- 0.009"
 6061-T6511, 6063(-T5/52)  Extruded  0.750 to 0.999  +/- 0.010"  0.750 to 0.999  +/- 0.010"
 6061-T6511, 6063(-T5/52)  Extruded  1.000 to 1.499  +/- 0.012"   1.000 to 1.499  +/- 0.012" 
 6061-T6511, 6063(-T5/52)  Extruded  1.500 to 1.999  +/- 0.014"  1.500 to 1.999  +/- 0.014"
 6061-T6511, 6063(-T5/52)  Extruded  2.000 to 3.999  +/- 0.024"  2.000 to 3.999  +/- 0.024"
 6061-T6511, 6063-T52  Extruded  4.000 to 5.999  +/- 0.034"  4.000 to 5.999  +/- 0.034"
 6061-T6511  Extruded  6.000 to 7.999  +/- 0.044"  6.000 to 7.999  +/- 0.044"
 6061-T6511  Extruded  8.000 to 9.999  +/- 0.054"  8.000 to 9.999  +/- 0.054"
 6061-T6511  Extruded  ...    10.000 to 11.999  +/-0.074"
 6061-T6511  Extruded  ...     12.000 to 13.999  +/-0.084"

 

 

Metric Rectangle Bar
           Spec. Thick, mm
          2mm to 6mm, incl. Over 6mm to 10mm, incl. Over 10mm to 18mm, incl. Over 18mm to 30mm, incl. Over 30mm to 50mm, incl.
     Spec. Width, mm  Width Tol. (over(+)/under(-))   Thick Tol. (over(+)/under(-))
 6060 Metric Extruded ≥ 10mm to 18mm, incl.  +/- 0.25mm    +/- 0.20mm  +/- 0.25mm  +/- 0.25mm ... ...
 6060 Metric  Extruded  Over 18mm to 30mm, incl.  +/- 0.30mm    +/- 0.20mm  +/- 0.25mm  +/- 0.30mm  +/- 0.30mm ...
 6060 Metric Extruded  Over 30mm to 50mm, incl.  +/- 0.40mm    +/- 0.25mm  +/- 0.25mm  +/- 0.30mm  +/- 0.35mm  +/- 0.40mm
 6060 Metric  Extruded  Over 50mm to 80mm, incl.  +/- 0.60mm    +/- 0.25mm  +/- 0.30mm  +/- 0.35mm  +/- 0.40mm  +/- 0.50mm
 6060 Metric  Extruded  Over 80mm to 120mm, incl.  +/- 0.80mm    +/- 0.30mm  +/- 0.35mm  +/- 0.40mm  +/- 0.45mm  +/- 0.60mm

 

 

Straightness Tolerance - Extruded Rectangle Bar
Temper   Spec. Thickness, in. Spec. Width, in. Max. Allowed Deviation from Straight
All except: TX511 Extruded Up thru 0.094 Up thru 1.499 0.050 × Measured Length, ft.
All except: TX511 Extruded 0.095 and over Up thru 1.499 0.0125 × Measured Length, ft.
All except: TX511 Extruded All 1.500 and over 0.0125 × Measured Length, ft.
TX511 Extruded 0.500 and over Over 0.500 0.0125 × Measured Length, ft.
Straightness tolerance will be void once full length is cut

 

 

Full Round Edge Rectangle Bar
Alloy(s)    Spec. Thick, in.  Thick Tol. (over(+)/under(-))  Spec. Width, in.  Width Tol. (over(+)/under(-))
6101-T61  Extruded  0.250  +/- 0.008" 1  +/- 0.012"
6101-T61  Extruded  0.250  +/- 0.008" 1.5  +/- 0.014"
6101-T61  Extruded  0.250  +/- 0.008" 2 to 3, incl.  +/- 0.024"
6101-T61(-T65)  Extruded  0.250  +/- 0.008" 4 to 5, incl.  +/- 0.034"
6101-T61(-T65)  Extruded  0.250  +/- 0.008" 6  +/- 0.044"
6101-T61  Extruded  0.375  +/- 0.008" 1.5  +/- 0.014"
6101-T61  Extruded  0.375  +/- 0.008" 2 to 3, incl.  +/- 0.024"
6101-T61  Extruded  0.375  +/- 0.008" 4 to 5, incl.  +/- 0.044"
6101-T61  Extruded  0.375  +/- 0.008" 6  +/- 0.044"
6101-T61  Extruded  0.500  +/- 0.009" 2 to 3, incl.  +/- 0.024"
6101-T61  Extruded  0.500  +/- 0.009" 4 to 5, incl.  +/- 0.034"
6101-T61  Extruded  0.500  +/- 0.009" 6  +/- 0.034"

 

 

Straightness Tolerance - Extruded Full Round Edge Rectangle Bar
Orientation Max. Allowed Deviation from Straight
Flatwise 0.025 × Measured Length, ft.
Edgewise 0.0125 × Measured Length, ft.
Straightness tolerance will be void once full length is cut

 

 

 

 

 

 

 

Angle
        Spec. Leg Length, in.
        0.250 to 0.624 0.625 to 1.249 1.250 to 2.499 2.500 to 3.999 4.000 to 5.999 6.000 to 8.000
Alloy(s)   Spec. Thick, in. Thick Tol. (over(+)/under(-)) Leg Tol. (over(+)/under(-))
6061-T6, 6063(-T5/52) Extruded Up thru 0.124  +/- 0.006"  +/- 0.010"  +/- 0.012"  ...  ...   ...   ... 
6061-T6, 6063(-T5/52) Extruded 0.125 to 0.249  +/- 0.007"  +/- 0.012"  +/- 0.014"  +/- 0.016"  ...   ...   ... 
6061-T6, 6063-T52 Extruded 0.250 to 0.499  +/- 0.008"  +/- 0.014"  +/- 0.016"  +/- 0.018"  +/- 0.020"  ...   ... 
6061-T6, 6063-T52 Extruded 0.500 to 0.749  +/- 0.009"  +/- 0.016"  +/- 0.018"  +/- 0.020"  +/- 0.022"  ...   ... 
6061-T6, 6063-T52 Extruded 0.750 to 0.999  +/- 0.010"  +/- 0.018"  +/- 0.020"  +/- 0.022"  +/- 0.025"  +/- 0.030"  ... 
6061-T6, 6063-T52 Extruded 1.000 to 1.499  +/- 0.012"  +/- 0.021"  +/- 0.023"  +/- 0.026"  +/- 0.030"  +/- 0.035"  ...
6061-T6, 6063-T52 Extruded 1.500 to 1.999  +/- 0.014"  +/- 0.024"  +/- 0.026"  +/- 0.031"  +/- 0.036"  +/- 0.042"  +/- 0.050"
6061-T6, 6063-T52 Extruded 2.000 to 3.999  +/- 0.024"  +/- 0.034"  +/- 0.038"  +/- 0.048"  +/- 0.057"  +/- 0.068"  +/- 0.080"
6061-T6, 6063-T52 Extruded 4.000 to 5.999  +/- 0.034"  +/- 0.044"  +/- 0.050"  +/- 0.064"  +/- 0.078"  +/- 0.094"  +/- 0.110"
6061-T6, 6063-T52 Extruded 6.000 to 7.999  +/- 0.044"  +/- 0.054"  +/- 0.062"  +/- 0.082"  +/- 0.099"  +/- 0.120"  +/- 0.140"
6061-T6, 6063-T52 Extruded 8.000 to 9.999  +/- 0.054"  +/- 0.064"  +/- 0.074"  +/- 0.100"  +/- 0.120"  +/- 0.145"  +/- 0.170"
Radius Tolerance
For sharp corners (90°) = +/- 2°. For non sharp corners = +/- 10% of specified radius.

 

 

 

 

 

 

 

Architectural Channel
        Leg Length Tolerances, in. (over(+)/under(-))
Alloy(s)    Spec. Thick, in.  Thick Tol. (over(+)/under(-))  0.250 to 0.624  0.625 to 1.249  1.250 to 2.499  2.500 to 3.999
6063-T52  Extruded  Up to 0.124  +/- 0.006"  +/- 0.010"  +/- 0.012"  ...  ...
6063-T52  Extruded  0.125 to 0.249  +/- 0.007"  +/- 0.012"  +/- 0.014"  +/- 0.016"  ...
6063-T52  Extruded  0.250 to 0.499  +/- 0.008"  +/- 0.016"  +/- 0.016"  +/- 0.018"  +/- 0.020"
6063-T52  Extruded  0.500 to 0.749  +/- 0.009"  +/- 0.018"  +/- 0.018"  +/- 0.020"  +/- 0.022"

 

 

 

 

 

 

 

Sheet/Plate (Non-Aerospace Alloys)
Applicable Alloys: 1100-H14, 3003-H14, 5005 (anodized), 5052-H32, 5086-H32, 6061(-O/-T4/-T6/-T651), 6063S(-T651)
  Specified Width, in.
  Up Thru 39.37  Over 39.37 thru 59.06  Over 59.06 thru 78.74
Spec. Thick, in. Thick Tol. (over(+)/under(-))
Over 0.0059 thru 0.010  +/- 0.0010"  +/- 0.0015"  ...
Over 0.010 thru 0.016  +/- 0.0010"  +/- 0.0015"  ...
Over 0.016 thru 0.025  +/- 0.0015"  +/- 0.0020"  +/- 0.0030"
Over 0.025 thru 0.032  +/- 0.0020"  +/- 0.0025"  +/- 0.0035"
Over 0.032 thru 0.039  +/- 0.0020"  +/- 0.0030"  +/- 0.0035"
Over 0.039 thru 0.047  +/- 0.0025"  +/- 0.0035"  +/- 0.0045"
Over 0.047 thru 0.063  +/- 0.0030"  +/- 0.0035"  +/- 0.0050"
Over 0.063 thru 0.079  +/- 0.0035"  +/- 0.0040"  +/- 0.006"
Over 0.079 thru 0.098  +/- 0.0035"  +/- 0.0045"  +/- 0.006"
Over 0.098 thru 0.126  +/- 0.0045"  +/- 0.006"  +/- 0.007"
Over 0.126 thru 0.158  +/- 0.006"  +/- 0.007"  +/- 0.009"
Over 0.158 thru 0.197  +/- 0.007"  +/- 0.009"  +/- 0.011"
Over 0.197 thru 0.248  +/- 0.009"  +/- 0.011"  +/- 0.013"
Over 0.248 thru 0.315  +/- 0.012"  +/- 0.014"  +/- 0.015"
Over 0.315 thru 0.394  +/- 0.015"  +/- 0.017"  +/- 0.020"
Over 0.394 thru 0.630  +/- 0.023"  +/- 0.023"  +/- 0.027"
Over 0.630 thru 0.984  +/- 0.031"  +/- 0.031"  +/- 0.037"
Over 0.984 thru 1.575  +/- 0.039"  +/- 0.039"  +/- 0.047"
Over 1.575 thru 2.362  +/- 0.055"  +/- 0.055"  +/- 0.060"
Over 2.362 thru 3.150  +/- 0.075"  +/- 0.075"  +/- 0.085"
Over 3.150 thru 3.937  +/- 0.100"  +/- 0.100"  +/- 0.115"
Over 3.937 thru 6.299  +/- 0.130"  +/- 0.130"  +/- 0.145"
Over 6.300 to 8.000  +/- 0.160"  +/- 0.160"  +/- 0.160"


Sheet/Plate (Non-Aerospace Alloys)
Applicable Alloys: MIC-6 & 5000 Series Cast Plate
  Spec. Thick, in. Thick Tol. (over(+)/under(-)) Flatness Tol. (deviation from flat)
 Cast  0.25 thru 0.625  +/- 0.005"  0.015"
 Cast  0.75 thru 4  +/- 0.005"  0.005"

 

 

Sheet/Plate (Aerospace Alloys)
Applicable Alloys: 2024-T3(Bare/Clad), 2024-T351, 7050-T7451, 7075-T6(Bare/Clad), 7075-T651, 7075(-T73/-T7351)
  Specified Width, in.
  Up Thru 39.37  Over 39.37 thru 47.24  Over 47.24 thru 55.12
Spec. Thick, in. Thick Tol. (over(+)/under(-))
Over 0.0059 thru 0.010  +/- 0.0010"  +/- 0.0020"  +/- 0.0020"
Over 0.010 thru 0.016  +/- 0.0015"  +/- 0.0025"  +/- 0.0025"
Over 0.016 thru 0.025  +/- 0.0015"  +/- 0.0025"  +/- 0.0025"
Over 0.025 thru 0.032  +/- 0.0015"  +/- 0.0015"  +/- 0.0030"
Over 0.032 thru 0.039  +/- 0.0015"  +/- 0.0015"  +/- 0.0030"
Over 0.039 thru 0.047  +/- 0.0020"  +/- 0.0020"  +/- 0.0030"
Over 0.047 thru 0.063  +/- 0.0020"  +/- 0.0020"  +/- 0.0030"
Over 0.063 thru 0.079  +/- 0.0020"  +/- 0.0020"  +/- 0.0035"
Over 0.079 thru 0.098  +/- 0.0025"  +/- 0.0025"  +/- 0.0040"
Over 0.098 thru 0.126  +/- 0.0035"  +/- 0.0035"  +/- 0.0045"
Over 0.126 thru 0.158  +/- 0.0040"  +/- 0.0040"  +/- 0.007"
Over 0.158 thru 0.197  +/- 0.006"  +/- 0.007"  +/- 0.009"
Over 0.197 thru 0.248  +/- 0.009"  +/- 0.012"  +/- 0.012"
Over 0.248 thru 0.315  +/- 0.012"  +/- 0.015"  +/- 0.015"
Over 0.315 thru 0.394  +/- 0.017"  +/- 0.018"  +/- 0.018"
Over 0.394 thru 0.630  +/- 0.023"  +/- 0.023"  +/- 0.023"
Over 0.630 thru 0.984  +/- 0.031"  +/- 0.031"  +/- 0.031"
Over 0.984 thru 1.575  +/- 0.039"  +/- 0.039"  +/- 0.039"
Over 1.575 thru 2.362  +/- 0.055"  +/- 0.055"  +/- 0.055"
Over 2.362 thru 3.150  +/- 0.075"  +/- 0.075"  +/- 0.075"
Over 3.150 thru 3.937  +/- 0.100"  +/- 0.100"  +/- 0.100"
Over 3.937 thru 6.299  +/- 0.130"  +/- 0.130"  +/- 0.130"
Over 6.300 to 8.000  +/- 0.160"  +/- 0.160"  +/- 0.160"

 

 

Sheet Flatness Tolerance
Applicable Alloys: 1100(-H14/H112), 3003-H14, 5005
Spec. Thick, in. Allowable Deviation from Flat
0.020 thru 0.064 0.1875"
0.065 thru 0.249 0.3125"
Flatness tolerance will be void once full sheet is cut

 

 

Sheet Flatness Tolerance
Applicable Alloys: 2024(-O/T3/T351), 5052-H32, 5086-H32, 6061(-O/T4/T6/T651), 7050-T7451, 7075(-O/T6/T651/T73/T7351)
Spec. Thick, in. Allowable Deviation from Flat
0.020 thru 0.064 0.3125"
0.065 thru 0.249 0.375"
Flatness tolerance will be void once full sheet is cut

 

 

Plate Longitudinal Flatness Tolerance
Applicable Alloys: TX51 Tempers
Spec. Thick, in. Allowable Deviation from Flat
0.250 to 3.000 0.1875" in any 6 ft.
3.001-8.000 0.125" in any 6 ft. or less
Flatness tolerance will be void once full sheet is cut

 

 

Plate Transverse Flatness Tolerance
Applicable Alloys: TX51 Tempers
Spec. Thick, in. Allowable Deviation from Flat
0.250 to 0.624 0.3125"
0.625 to 1.500 0.1875"
1.501 to 3.000 0.1875"
3.001 to 8.000 0.125"
Flatness tolerance will be void once full sheet is cut

 

 

Plate Longitudinal Flatness Tolerance
Applicable Alloys: Other than TX51 Tempers
Spec. Thick, in. Allowable Deviation from Flat
0.250 to 3.000 0.25" in any 6 ft. or less
3.001-8.000 0.25" in any 6 ft. or less
Flatness tolerance will be void once full sheet is cut

 

 

Plate Transverse Flatness Tolerance
Applicable Alloys: Other than TX51 Tempers
Spec. Thick, in. Allowable Deviation from Flat
0.250 to 0.624 0.375"
0.625 to 1.500 0.25"
1.501 to 3.000 0.1875"
3.001 to 8.000 0.1875"
Flatness tolerance will be void once full sheet is cut

 

 

 

 

 

 

 

Tread Plate
Applicable Alloys: 3003-H22
Spec. Thick, in. Thickness Tol. (over(+)/under(-))
0.100 +/- 0.006"
0.125 +/- 0.009"
0.156 +/- 0.010"
0.188 +/- 0.010"


Tread Plate
Applicable Alloys: 6061-T6
Spec. Thick, in. Spec. Tol. (over(+)/under(-))
0.100 + 0.008", - 0.012"
0.125 + 0.010", - 0.015"
0.156 + 0.011", - 0.019"
0.188 + 0.013", - 0.023"
0.250 + 0.018", - 0.030"
0.375 + 0.025", - 0.045"
0.500 + 0.035", - 0.060"
0.625 + 0.044", - 0.075"

 

 

 

 

 

 

 

Drawn Round Tube
Alloy(s)    Spec. O.D., in.  O.D. Tol. (over(+)/under(-))    Spec. Wall Thickness, in.  Wall Thickness Tol. (over(+)/under(-))
2024-T3, 6061-T6  Drawn  Up thru 0.500  +/- 0.003"    0.010 to 0.035  +/- 0.002"
2024-T3, 6061-T6  Drawn  0.501 to 1.000  +/- 0.004"    0.036 to 0.049  +/- 0.003"
2024-T3, 6061-T6  Drawn  1.001 to 2.000  +/- 0.005"    0.050 to 0.083  +/- 0.004"
2024-T3, 6061-T6  Drawn  2.001 to 3.000  +/- 0.006"    0.084 to 0.120  +/- 0.005"
2024-T3, 6061-T6  Drawn  3.001 to 5.000  +/- 0.008    0.121 to 0.203  +/- 0.006"
2024-T3, 6061-T6  Drawn  5.001 to 6.000  +/- 0.010"    0.204 to 0.300  +/- 0.008"
2024-T3, 6061-T6  Drawn  6.001 to 8.000  +/- 0.015"    0.301 to 0.375  +/- 0.015"
2024-T3, 6061-T6  Drawn  8.001 to 10.000  +/- 0.020"    0.376 to 0.500  +/- 0.020"
2024-T3, 6061-T6  Drawn  10.001 to 12.000  +/- 0.025"    ...  ...

 

 

Straightness Tolerance - Drawn Round Tube
Temper   Spec. Outside Diameter, in. Max. Allowed Deviation from Straight
All Drawn Up thru 0.374 0.500 × Measured Length, ft.
All Drawn 0.375 to 5.999 0.010 × Measured Length, ft.
All Drawn 6.000 and over 0.020 × Measured Length, ft.
Straightness tolerance will be void once full length is cut

 

 

Extruded Round Tube
Alloy(s)    Spec. O.D., in.  O.D. Tol. (over(+)/under(-))
6061-T6, 6063(-T5/52)  Extruded  0.500 to 0.999  +/- 0.020"
6061-T6, 6063(-T5/52)  Extruded  1.000 to 1.999  +/- 0.025"
6061-(T6/T6511), 6063-T52  Extruded  2.000 to 3.999  +/- 0.030"
6061-(T6/T6511), 6063-T52  Extruded  4.000 to 5.999  +/- 0.050"
6061-(T6/T6511), 6063-T52  Extruded  6.000 to 7.999  +/- 0.075"
6061-(T6/T6511)  Extruded  8.000 to 9.999  +/- 0.100"
6061-(T6/T6511)  Extruded  10.000 to 11.999  +/- 0.125"
6061-(T6/T6511)  Extruded  12.000 to 13.999  +/- 0.150"
6061-(T6/T6511)  Extruded  14.000 to 15.999  +/- 0.175"
6061-(T6/T6511)  Extruded  16.000 to 17.999  +/- 0.200"
6061-(T6/T6511)  Extruded  18.000 to 19.999  +/- 0.225"
6061-(T6/T6511)  Extruded  20.000 to 21.999  +/- 0.250"
6061-(T6/T6511)  Extruded  22.000 to 23.999  +/- 0.275"

 

 

Extruded Round Tube
      Spec. O.D., in.
       Under 1.250  1.250 to 2.999  3.000 to 4.999  5.000 & over
Alloy(s)     Spec. Wall Thickness, in. Mean Wall Thickness Tol. (over(+)/under(-))
6061-T6  Extruded  Under 0.047  +/- 0.006"  ... ...  ... 
6061-T6, 6063-T5  Extruded  0.047 to 0.061  +/- 0.007"  +/- 0.008"  +/- 0.008"  +/- 0.010"
6061-T6, 6063-T5  Extruded  0.062 to 0.077  +/- 0.008"  +/- 0.008"  +/- 0.009"  +/- 0.012"
6061-T6  Extruded  0.078 to 0.124  +/- 0.009"  +/- 0.009"  +/- 0.010"  +/- 0.015"
6061-T6, 6063(-T5/52)  Extruded  0.125 to 0.249  +/- 0.009"  +/- 0.009"  +/- 0.013"  +/- 0.020"
6061-T6  Extruded  0.250 to 0.374  +/- 0.011"  +/- 0.011"  +/- 0.016"  +/- 0.025"
6061-T6  Extruded  0.375 to 0.499  ...  +/- 0.015"  +/- 0.021"  +/- 0.035"
6061-(T6/T6511), 6063-T52  Extruded  0.500 to 0.749  ...   +/- 0.020"  +/- 0.028"  +/- 0.045"
6061-T6  Extruded  0.750 to 0.999  ...   ...   +/- 0.035"  +/- 0.055"
6061-T6  Extruded  1.000 to 1.499  ...   ...   +/- 0.045"  +/- 0.065"
6061-T6  Extruded  1.500 to 2.000  ...   ...   ...   +/- 0.075"
6061-T6  Extruded  2.001 to 2.499  ...   ...   ...   +/- 0.085"
6061-(T6/T6511)  Extruded  2.500 to 2.999  ...   ...   ...   +/- 0.095"
6061-(T6/T6511)  Extruded  3.000 to 3.499  ...   ...   ...   +/- 0.105"
6061-(T6/T6511)  Extruded  3.500 to 4.000  ...   ...   ...   +/- 0.115"

 

 

Metric Round Tube
Alloy(s)    Spec. O.D. & Wall Thickness,  mm O.D. & Wall Thickness Tol. (over(+)/under(-))
 6060 metric  Extruded  ≥ 8mm to 18mm  +/- 0.60mm
 6060 metric  Extruded  > 18mm to 30mm  +/- 0.70mm
 6060 metric  Extruded  > 30mm to 50mm  +/- 0.90mm
 6060 metric  Extruded  > 50mm to 80mm  +/- 1.1mm
 6060 metric  Extruded  > 80mm to 120mm  +/- 1.4mm

 

 

Straightness Tolerance - Extruded Round Tube
Temper   Spec. Outside Diameter, in. Max. Allowed Deviation from Straight
All Extruded 0.500 to 5.999 0.010 × Measured Length, ft.
All Extruded 6.000 and over 0.020 × Measured Length, ft.
Straightness tolerance will be void once full length is cut

 

 

 

 

 

 

 

Square Tube
Alloy(s)    Spec. Height, in. Height Tol. (at corners) (over(+)/under(-))  Height Tol. (not at corners) (over(+)/under(-))
6061-T6, 6063-T52  Extruded  0.500 to 0.749  +/- 0.012"  +/- 0.020"
6061-T6, 6063-T52  Extruded  0.750 to 0.999  +/- 0.014"  +/- 0.020"
6061-T6, 6063(-T5/52)  Extruded  1.000 to 1.999  +/- 0.018"  +/- 0.025"
6061-T6, 6063-T52  Extruded  2.000 to 3.999  +/- 0.025"  +/- 0.035"
6061-T6, 6063-T52  Extruded  4.000 to 4.999  +/- 0.035"  +/- 0.045"
6061-T6, 6063-T52  Extruded  5.000 to 5.999  +/- 0.045"  +/- 0.055"
6061-T6, 6063-T52  Extruded  6.000 to 6.999  +/- 0.055"  +/- 0.065"
6061-T6, 6063-T52  Extruded  7.000 to 7.999  +/- 0.065"  +/- 0.075"
6061-T6, 6063-T52  Extruded  8.000 to 8.999  +/- 0.075"  +/- 0.085"
6061-T6, 6063-T52  Extruded  9.000 to 9.999  +/- 0.085"  +/- 0.095"
6061-T6, 6063-T52  Extruded  10.000 to 10.999  +/- 0.095"  +/- 0.105"
6061-T6, 6063-T52  Extruded  11.000 to 12.999  +/- 0.105"  +/- 0.115"
         
      Circumscribing Circle Dia., in.
      Under 5.000(Height ≤ 3.5") 5.000 and Over(Height > 3.5")
      Spec. Wall Thickness, in. Wall Thickness Tol. (over(+)/under(-))   
6061-T6, 6063-T52  Extruded  Under 0.047  +/- 0.005"  +/- 0.008"
6061-T6, 6063-T52  Extruded  0.047 to 0.061  +/- 0.006"  +/- 0.009"
6061-T6, 6063(-T5/52)  Extruded  0.062 to 0.124  +/- 0.007"  +/- 0.010"
6061-T6, 6063(-T5/52)  Extruded  0.125 to 0.249  +/- 0.008"  +/- 0.015"
6061-T6, 6063-T52  Extruded  0.250 to 0.374  +/- 0.011"  +/- 0.020"
6061-T6, 6063-T52  Extruded  0.375 to 0.499  +/- 0.014"  +/- 0.030"
6061-T6, 6063-T52  Extruded  0.500 to 0.749  +/- 0.025"  +/- 0.040"
6061-T6, 6063-T52  Extruded  0.750 to 0.999  +/- 0.035"  +/- 0.050"
6061-T6, 6063-T52  Extruded  1.000 to 1.499  +/- 0.045"  +/- 0.060"
6061-T6, 6063-T52  Extruded  1.500 to 2.000 ...  +/- 0.070"

 

 

Metric Square Tube
Alloy(s)    Spec. Height & Wall Thickness, mm Height & Wall Thickness Tol. (over(+)/under(-))
 6060 metric  Extruded  ≤ 10mm  +/- 0.25mm
 6060 metric  Extruded  > 10mm to 25mm  +/- 0.30mm
 6060 metric  Extruded  > 25mm to 50mm  +/- 0.50mm
 6060 metric  Extruded  > 50mm to 100mm  +/- 0.70mm

 

 

Square Tube w/ Radius Corners
    Spec. Inside and/or Outside Radius, in.  Inside and/or Outside Radius Tol. (over(+)/under(-))
 6061-T6, 6063-T52  Extruded  0.016 to 0.187  +/- 1/64"
 6061-T6, 6063-T52  Extruded  0.188 and over  +/- 10%
Height and width tolerances are the same for extruded tubes without radius corners.

 

 

Straightness Tolerance - Extruded Square Tube
  Circumscribing Circle Dia., in.
  0.500 to 5.999(Height < 4.25") 6.000(Height ≥ 4.25") and over
Temper   Max. Allowed Deviation from Straight
All Extruded 0.010 × Measured Length, ft. 0.020 × Measured Length, ft.
Straightness tolerance will be void once full length is cut

 

 

 

 

 

 

 

Rectangle Tube
Alloy(s)    Spec. Height & Width, in. Height & Width Tol. (at corners) (over(+)/under(-))  Height & Width Tol. (not at corners) (over(+)/under(-))
6061-T6, 6063(-T5/52)  Extruded  0.500 to 0.749  +/- 0.012"  +/- 0.020"
6061-T6, 6063-T52  Extruded  0.750 to 0.999  +/- 0.014"  +/- 0.020"
6061-T6, 6063(-T5/52)  Extruded  1.000 to 1.999  +/- 0.018"  +/- 0.025"
6061-T6, 6063-T52  Extruded  2.000 to 3.999  +/- 0.025"  +/- 0.035"
6061-T6, 6063-T52  Extruded  4.000 to 4.999  +/- 0.035"  +/- 0.045"
6061-T6, 6063-T52  Extruded  5.000 to 5.999  +/- 0.045"  +/- 0.055"
6061-T6, 6063-T52  Extruded  6.000 to 6.999  +/- 0.055"  +/- 0.065"
6061-T6, 6063-T52  Extruded  7.000 to 7.999  +/- 0.065"  +/- 0.075"
6061-T6, 6063-T52  Extruded  8.000 to 8.999  +/- 0.075"  +/- 0.085"
6061-T6, 6063-T52  Extruded  9.000 to 9.999  +/- 0.085"  +/- 0.095"
6061-T6, 6063-T52  Extruded  10.000 to 10.999  +/- 0.095"  +/- 0.105"
6061-T6, 6063-T52  Extruded  11.000 to 12.999  +/- 0.105"  +/- 0.115"
         
      Circumscribing Circle Dia., in.
      Under 5.000(Dims < 3" x 4") 5.000 and over(Dims ≥ 3" x 4")
      Spec. Wall Thickness, in. Allowable Deviation of Mean Wall Thickness From Spec. Wall Thickness
6061-T6, 6063-T52  Extruded  Under 0.047  +/- 0.005"  +/- 0.008"
6061-T6, 6063-T52  Extruded  0.047 to 0.061  +/- 0.006"  +/- 0.009"
6061-T6, 6063-T52  Extruded  0.062 to 0.124  +/- 0.007"  +/- 0.010"
6061-T6, 6063(-T5/52)  Extruded  0.125 to 0.249  +/- 0.008"  +/- 0.015"
6061-T6, 6063-T52  Extruded  0.250 to 0.374  +/- 0.011"  +/- 0.020"
6061-T6, 6063-T52  Extruded  0.375 to 0.499  +/- 0.014"  +/- 0.030"
6061-T6, 6063-T52  Extruded  0.500 to 0.749  +/- 0.025"  +/- 0.040"
6061-T6, 6063-T52  Extruded  0.750 to 0.999  +/- 0.035"  +/- 0.050"
6061-T6, 6063-T52  Extruded  1.000 to 1.499  +/- 0.045"  +/- 0.060"
6061-T6, 6063-T52  Extruded  1.500 to 2.000 ...  +/- 0.070"

 

 

Rectangle Tube
Alloy(s)    Spec. Height, Width, & Wall Thickness, mm Height, Width, & Wall Thickness Tol. (over(+)/under(-))
 6060 metric  Extruded  ≤ 10mm  +/- 0.30mm
 6060 metric  Extruded  > 10mm to 25mm  +/- 0.40mm
 6060 metric  Extruded  > 25mm to 50mm  +/- 0.60mm
 6060 metric  Extruded  > 50mm to 100mm  +/- 0.90mm
 6060 metric  Extruded  > 100mm to 150mm  +/- 1.1mm
 6060 metric  Extruded  > 150mm to 200mm  +/- 1.3mm

 

 

Rectangle Tube w/ Radius Corners
    Spec. Inside and/or Outside Radius, in.  Inside and/or Outside Radius Tol. (over(+)/under(-))
 6061-T6, 6063-T52  Extruded  0.016 to 0.187  +/- 1/64"
 6061-T6, 6063-T52  Extruded  0.188 and over  +/- 10%
Height and width tolerances are the same for extruded tubes without radius corners.

 

 

Straightness Tolerance - Extruded Rectangle Tube
  Circumscribing Circle Dia., in.
  0.500 to 5.999(Height*Width < 18) 6.000(Height*Width ≥ 18) and over
Temper   Max. Allowed Deviation from Straight
All Extruded 0.010 × Measured Length, ft. 0.020 × Measured Length, ft.
Straightness tolerance will be void once full length is cut

 

 

 

 

 

 

 

Pipe
      Nominal Diameter Tol. (over(+)/under(-))
    Nominal Pipe Size Schedules 5 & 10 Schedules 20 & greater
6061-T6, 6063-T52, 6101-T6 Extruded  Under 2 + 0.015", - 0.031" + 0.015", - 0.031"
6061-T6, 6063-T52, 6101-T6 Extruded  2 to 4 +/- 0.031"  +/- 1%
6061-T6, 6063-T52, 6101-T6 Extruded  5 to 6 + 0.062", - 0.031"  +/- 1%
6061-T6, 6063-T52, 6101-T6 Extruded  8 to 12 + 0.093", - 0.031"  +/- 1%
         
    Schedule # Wall Thickness Tol. (over(+)/under(-))
6061-T6, 6063-T52, 6101-T6 Extruded  5 & 10 +/- 12.5%, +/- 0.012" min.
6061-T6, 6063-T52, 6101-T6 Extruded  20 & Greater  - 12.5%

 

 

Straightness Tolerance - Extruded Pipe
Temper   Nominal Pipe Size Max. Allowed Deviation from Straight
All Extruded Under 6 0.010 × Measured Length, ft.
All Extruded 6-12 0.020 × Measured Length, ft.
Straightness tolerance will be void once full length is cut