Dimensions - HA: HSS - ASTM A500 Round
Welcome to our HSS Round (ASTM A500) dimension page. Here you'll find outside diameter and wall/design thickness for every round HSS section in this grade, sourced from the CISC Structural Section Tables (CISC 12). Sort by any column and click through to download a CAD block.
| Designation (metric) | Designation (imperial) | Outer diameter (mm) | Wall thickness (mm) | Design wall thickness (mm) | Mass per length (kg/ | Weight per length (imperial) (lb/ | Theoretical cross-sectional area (mm^2) |
|---|---|---|---|---|---|---|---|
| Ds_m | Ds_i | D | T | Tdes | Mass | Wt_i | A_Th |
| HA711x25 | HA28x1.000 | 711.2 | 25.4 | 22.86 | 430 | 289 | 49400 |
| HA711x19 | HA28x0.750 | 711.2 | 19.05 | 17.15 | 325 | 219 | 37400 |
| HA711x13 | HA28x0.500 | 711.2 | 12.7 | 11.43 | 219 | 147 | 25100 |
| HA610x25 | HA24x1.000 | 609.6 | 25.4 | 22.86 | 366 | 246 | 42100 |
| HA610x19 | HA24x0.750 | 609.6 | 19.05 | 17.15 | 277 | 186 | 31900 |
| HA610x13 | HA24x0.500 | 609.6 | 12.7 | 11.43 | 187 | 126 | 21500 |
| HA610x9.5 | HA24x0.375 | 609.6 | 9.53 | 8.58 | 141 | 94.7 | 16200 |
| HA508x25 | HA20x1.000 | 508 | 25.4 | 22.86 | 302 | 203 | 34800 |
| HA508x19 | HA20x0.750 | 508 | 19.05 | 17.15 | 230 | 154 | 26400 |
| HA508x13 | HA20x0.500 | 508 | 12.7 | 11.43 | 155 | 104 | 17800 |
| HA508x9.5 | HA20x0.375 | 508 | 9.53 | 8.58 | 117 | 78.7 | 13500 |
| HA508x6.4 | HA20x0.250 | 508 | 6.35 | 5.72 | 78.6 | 52.8 | 9030 |
| HA457x25 | HA18x1.000 | 457.2 | 25.4 | 22.86 | 270 | 182 | 31200 |
| HA457x19 | HA18x0.750 | 457.2 | 19.05 | 17.15 | 206 | 138 | 23700 |
| HA457x13 | HA18x0.500 | 457.2 | 12.7 | 11.43 | 139 | 93.6 | 16000 |
| HA457x9.5 | HA18x0.375 | 457.2 | 9.53 | 8.58 | 105 | 70.7 | 12100 |
| HA457x6.4 | HA18x0.250 | 457.2 | 6.35 | 5.72 | 70.6 | 47.4 | 8110 |
| HA406x25 | HA16x1.000 | 406.4 | 25.4 | 22.86 | 239 | 160 | 27500 |
| HA406x19 | HA16x0.750 | 406.4 | 19.05 | 17.15 | 182 | 122 | 21000 |
| HA406x16 | HA16x0.625 | 406.4 | 15.88 | 14.29 | 153 | 103 | 17600 |
| HA406x13 | HA16x0.500 | 406.4 | 12.7 | 11.43 | 123 | 82.9 | 14200 |
| HA406x9.5 | HA16x0.375 | 406.4 | 9.53 | 8.58 | 93.3 | 62.6 | 10700 |
| HA406x6.4 | HA16x0.250 | 406.4 | 6.35 | 5.72 | 62.6 | 42.1 | 7200 |
| HA356x19 | HA14x0.750 | 355.6 | 19.05 | 17.15 | 158 | 106 | 18200 |
| HA356x16 | HA14x0.625 | 355.6 | 15.88 | 14.29 | 133 | 89.4 | 15300 |
| HA356x13 | HA14x0.500 | 355.6 | 12.7 | 11.43 | 107 | 72.2 | 12400 |
| HA356x9.5 | HA14x0.375 | 355.6 | 9.53 | 8.58 | 81.3 | 54.6 | 9350 |
| HA356x6.4 | HA14x0.250 | 355.6 | 6.35 | 5.72 | 54.7 | 36.8 | 6290 |
| HA324x19 | HA12.75x0.750 | 323.9 | 19.05 | 17.15 | 143 | 96.2 | 16500 |
| HA324x16 | HA12.75x0.625 | 323.9 | 15.88 | 14.29 | 121 | 81 | 13900 |
| HA324x13 | HA12.75x0.500 | 323.9 | 12.7 | 11.43 | 97.5 | 65.5 | 11200 |
| HA324x9.5 | HA12.75x0.375 | 323.9 | 9.53 | 8.58 | 73.9 | 49.6 | 8500 |
| HA324x6.4 | HA12.75x0.250 | 323.9 | 6.35 | 5.72 | 49.7 | 33.4 | 5720 |
| HA273x13 | HA10.75x0.500 | 273.1 | 12.7 | 11.43 | 81.6 | 54.8 | 9400 |
| HA273x9.5 | HA10.75x0.375 | 273.1 | 9.53 | 8.58 | 61.9 | 41.6 | 7130 |
| HA273x7.9 | HA10.75x0.313 | 273.1 | 7.94 | 7.15 | 51.9 | 34.9 | 5970 |
| HA273x6.4 | HA10.75x0.250 | 273.1 | 6.35 | 5.72 | 41.8 | 28.1 | 4800 |
| HA273x4.8 | HA10.75x0.188 | 273.1 | 4.78 | 4.3 | 31.6 | 21.2 | 3630 |
| HA245x9.5 | HA9.625x0.375 | 244.5 | 9.53 | 8.58 | 55.2 | 37.1 | 6360 |
| HA245x6.4 | HA9.625x0.250 | 244.5 | 6.35 | 5.72 | 37.3 | 25.1 | 4290 |
| HA219x13 | HA8.625x0.500 | 219.1 | 12.7 | 11.43 | 64.6 | 43.4 | 7460 |
| HA219x9.5 | HA8.625x0.375 | 219.1 | 9.53 | 8.58 | 49.3 | 33.1 | 5670 |
| HA219x6.4 | HA8.625x0.250 | 219.1 | 6.35 | 5.72 | 33.3 | 22.4 | 3830 |
| HA219x4.8 | HA8.625x0.188 | 219.1 | 4.78 | 4.3 | 25.3 | 17 | 2900 |
| HA178x13 | HA7x0.500 | 177.8 | 12.7 | 11.43 | 51.7 | 34.7 | 5970 |
| HA178x9.5 | HA7x0.375 | 177.8 | 9.53 | 8.58 | 39.5 | 26.6 | 4560 |
| HA168x13 | HA6.625x0.500 | 168.3 | 12.7 | 11.43 | 48.7 | 32.7 | 5630 |
| HA168x9.5 | HA6.625x0.375 | 168.3 | 9.53 | 8.58 | 37.3 | 25.1 | 4310 |
| HA168x6.4 | HA6.625x0.250 | 168.3 | 6.35 | 5.72 | 25.4 | 17 | 2920 |
| HA168x4.8 | HA6.625x0.188 | 168.3 | 4.78 | 4.3 | 19.3 | 12.9 | 2220 |
| HA152x7.9 | HA6x0.313 | 152.4 | 7.94 | 7.15 | 28.3 | 19 | 3260 |
| HA152x6.4 | HA6x0.250 | 152.4 | 6.35 | 5.72 | 22.9 | 15.4 | 2640 |
| HA141x13 | HA5.563x0.500 | 141.3 | 12.7 | 11.43 | 40.3 | 27.1 | 4660 |
| HA141x9.5 | HA5.563x0.375 | 141.3 | 9.53 | 8.58 | 31 | 20.8 | 3580 |
| HA141x6.4 | HA5.563x0.250 | 141.3 | 6.35 | 5.72 | 21.1 | 14.2 | 2440 |
| HA127x9.5 | HA5x0.375 | 127 | 9.53 | 8.58 | 27.6 | 18.5 | 3190 |
| HA127x7.9 | HA5x0.313 | 127 | 7.94 | 7.15 | 23.3 | 15.7 | 2690 |
| HA127x6.4 | HA5x0.250 | 127 | 6.35 | 5.72 | 18.9 | 12.7 | 2180 |
| HA114x6.4 | HA4.5x0.250 | 114.3 | 6.35 | 5.72 | 16.9 | 11.4 | 1950 |
| HA114x4.8 | HA4.5x0.188 | 114.3 | 4.78 | 4.3 | 12.9 | 8.67 | 1490 |
| HA102x6.4 | HA4x0.250 | 101.6 | 6.35 | 5.72 | 14.9 | 10 | 1720 |
| HA102x4.8 | HA4x0.188 | 101.6 | 4.78 | 4.3 | 11.4 | 7.66 | 1310 |
| HA89x6.4 | HA3.5x0.250 | 88.9 | 6.35 | 5.72 | 12.9 | 8.69 | 1490 |
| HA89x4.8 | HA3.5x0.188 | 88.9 | 4.78 | 4.3 | 9.92 | 6.66 | 1140 |
| HA89x3.2 | HA3.5x0.125 | 88.9 | 3.18 | 2.86 | 6.72 | 4.51 | 773 |
| HA76x6.4 | HA3x0.250 | 76.2 | 6.35 | 5.72 | 10.9 | 7.35 | 1270 |
| HA76x4.8 | HA3x0.188 | 76.2 | 4.78 | 4.3 | 8.42 | 5.65 | 971 |
| HA76x3.2 | HA3x0.125 | 76.2 | 3.18 | 2.86 | 5.73 | 3.84 | 659 |
| HA73x6.4 | HA2.875x0.250 | 73 | 6.35 | 5.72 | 10.4 | 7.02 | 1210 |
| HA73x4.8 | HA2.875x0.188 | 73 | 4.78 | 4.3 | 8.04 | 5.4 | 928 |
| HA73x3.2 | HA2.875x0.125 | 73 | 3.18 | 2.86 | 5.48 | 3.68 | 630 |
| HA64x6.4 | HA2.5x0.250 | 63.5 | 6.35 | 5.72 | 8.95 | 6.01 | 1040 |
| HA64x4.8 | HA2.5x0.188 | 63.5 | 4.78 | 4.3 | 6.92 | 4.65 | 800 |
| HA64x3.2 | HA2.5x0.125 | 63.5 | 3.18 | 2.86 | 4.73 | 3.17 | 545 |
| HA60x6.4 | HA2.375x0.250 | 60.3 | 6.35 | 5.72 | 8.45 | 5.68 | 981 |
| HA60x4.8 | HA2.375x0.188 | 60.3 | 4.78 | 4.3 | 6.54 | 4.4 | 756 |
| HA60x3.2 | HA2.375x0.125 | 60.3 | 3.18 | 2.86 | 4.48 | 3.01 | 516 |
| HA48x4.8 | HA1.9x0.188 | 48.3 | 4.78 | 4.3 | 5.13 | 3.44 | 594 |
| HA48x3.2 | HA1.9x0.125 | 48.3 | 3.18 | 2.86 | 3.54 | 2.37 | 408 |
| HA42x3.2 | HA1.66x0.125 | 42.2 | 3.18 | 2.86 | 3.06 | 2.05 | 353 |