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Square Hollow Structural Sections (HSS) – Sizes, Strength & Specifications

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  • 1 in = 25.4 mm

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Square Hollow Structural Sections - HSS
Nominal Size 3)WeightWall Thicknessb/t 1)h/t 1)Cross Sectional Area 2)I 1)S 1)r 1)Z 1)Torsional Stiffness Constant
J		Torsional Shear Constant
C		Surface Area
(in x in x in)(lbf/ft)(in)--(in2)(in4)(in3)(in)(in3)(in4)(in3)(ft2/ft)
32 x 32 x 5/8 259.83 0.625 48.2 48.2 76.4 12300 771 12.7 890 19700 1230 10.34
32 x 32 x 1/2 210.72 0.500 61.0 61.0 61.9 10100 634 12.8 727 15900 991 10.45
32 x 32 x 3/8 159.37 0.375 82.3 82.3 46.8 7750 485 12.9 553 12000 750 10.51
30 x 30 x 5/8 242.82 0.625 45.0 45.0 71.4 10100 673 11.9 778 16200 1070 9.68
30 x 30 x 1/2 197.11 0.500 57.0 57.0 57.9 8320 555 12.0 637 13000 869 9.79
30 x 30 x 3/8 149.16 0.375 77.0 77.0 43.8 6370 424 12.1 485 9870 658 9.84
28 x 28 x 5/8 225.80 0.625 41.8 41.8 66.4 8140 582 11.1 674 13100 933 9.01
28 x 28 x 1/2 183.50 0.500 53.0 53.0 53.9 6730 480 11.2 552 10600 755 9.12
28 x 28 x 3/8 138.95 0.375 71.7 71.7 40.8 5150 368 11.2 421 8010 572 9.17
26 x 26 x 5/8 208.79 0.625 38.6 38.6 61.4 6460 497 10.3 577 10500 801 8.34
26 x 26 x 1/2 169.89 0.500 49.0 49.0 49.9 5350 411 10.4 474 8430 649 8.45
26 x 26 x 3/8 128.74 0.375 66.3 66.3 37.8 4110 316 10.4 362 6400 492 8.51
24 x 24 x 5/8 191.78 0.625 35.4 35.4 56.4 5030 419 9.44 487 8180 679 7.68
24 x 24 x 1/2 156.28 0.500 45.0 45.0 45.9 4170 348 9.53 401 6610 551 7.79
24 x 24 x 3/8 118.53 0.375 61.0 61.0 34.8 3210 268 9.60 307 5020 418 7.84
22 x 22 x 5/8 174.76 0.625 32.2 32.2 51.4 3820 347 8.62 406 6260 567 7.01
22 x 22 x 1/2 142.67 0.500 41.0 41.0 41.9 3190 290 8.72 335 5070 461 7.12
22 x 22 x 3/8 108.32 0.375 55.7 55.7 31.8 2460 223 8.78 256 3850 350 7.17
20 x 20 x 5/8 157.75 0.625 29.0 29.0 46.4 2830 283 7.81 331 4670 465 6.34
20 x 20 x 1/2 129.06 0.500 37.0 37.0 37.9 2370 237 7.90 275 3790 379 6.45
20 x 20 x 3/8 98.12 0.375 50.3 50.3 28.8 1830 183 7.97 211 2880 288 6.51
18 x 18 x 5/8 140.73 0.625 25.8 25.8 41.4 2020 224 6.99 264 3370 373 5.68
18 x 18 x 1/2 115.45 0.500 33.0 33.0 33.9 1700 189 7.08 220 2740 305 5.79
18 x 18 x 3/8 87.91 0.375 45.0 45.0 25.8 1320 147 7.15 169 2090 232 5.84
16 x 16 x 5/8 127.37 0.581 24.5 24.5 35.0 1370 171 6.25 200 2170 276 5.17
16 x 16 x 1/2 103.30 0.465 31.4 31.4 28.3 1130 141 6.31 164 1770 224 5.20
16 x 16 x 3/8 78.52 0.349 42.8 42.8 21.5 873 109 6.37 126 1350 171 5.23
16 x 16 x 5/16 65.87 0.291 52.0 52.0 18.1 739 92.3 6.39 106 1140 144 5.25
14 x 14 x 5/8 110.36 0.581 21.1 21.1 30.3 896 128 5.44 151 1430 208 4.50
14 x 14 x 1/2 89.68 0.465 27.1 27.1 24.6 743 106 5.49 124 1170 170 4.53
14 x 14 x 3/8 68.31 0.349 37.1 37.1 18.7 577 82.5 5.55 95.4 900 130 4.57
14 x 14 x 5/16 57.36 0.291 45.1 45.1 15.7 490 69.9 5.58 80.5 759 109 4.58
12 x 12 x 5/8 93.34 0.581 17.7 17.7 25.7 548 91.3 4.62 109 885 151 3.83
12 x 12 x 1/2 76.07 0.465 22.8 22.8 20.9 457 76.2 4.68 89.6 728 123 3.87
12 x 12 x 3/8 58.10 0.349 31.4 31.4 16.0 357 59.5 4.73 69.2 561 94.6 3.90
12 x 12 x 5/16 48.86 0.291 38.2 38.2 13.4 304 50.7 4.76 58.6 474 79.7 3.92
12 x 12 x 1/4 39.43 0.233 48.5 48.5 10.8 248 41.4 4.79 47.6 384 64.5 3.93
10×10 x 5/8 76.33 0.581 14.2 14.2 21.0 304 60.8 3.80 73.2 498 102 3.17
10×10 x 1/2 62.46 0.465 18.5 18.5 17.2 256 51.2 3.86 60.7 412 84.2 3.20
10×10 x 3/8 47.90 0.349 25.7 25.7 13.2 202 40.4 3.92 47.2 320 64.8 3.23
10×10 x 5/16 40.35 0.291 31.4 31.4 11.1 172 34.5 3.94 40.1 271 54.8 3.25
10×10 x 1/4 32.63 0.233 39.9 39.9 8.96 141 28.3 3.97 32.7 220 44.4 3.27
10×10 x 3/16 24.73 0.174 54.5 54.5 6.76 108 21.6 4.00 24.8 167 33.6 3.28
9 x 9 x 1/2 55.66 0.465 16.4 16.4 15.3 182 40.6 3.45 48.4 296 67.4 2.87
9 x 9 x 3/8 42.79 0.349 22.8 22.8 11.8 145 32.2 3.51 37.8 231 52.1 2.90
9 x 9 x 5/16 36.10 0.291 27.9 27.9 9.92 124 27.6 3.54 32.1 196 44.0 2.92
9 x 9 x 1/4 29.23 0.233 35.6 35.6 8.03 102 22.7 3.56 26.2 159 35.8 2.93
9 x 9 x 3/16 22.18 0.174 48.7 48.7 6.06 78.2 17.4 3.59 20.0 121 27.1 2.95
8 x 8 x 5/8 59.32 0.581 10.8 10.8 16.4 146 36.5 2.99 44.7 244 63.2 2.50
8 x 8 x 1/2 48.85 0.465 14.2 14.2 13.5 125 31.2 3.04 37.5 204 52.4 2.53
8 x 8 x 3/8 37.69 0.349 19.9 19.9 10.4 99.6 24.9 3.10 29.4 160 40.7 2.57
8 x 8 x 5/16 31.84 0.291 24.5 24.5 8.76 85.6 21.4 3.13 25.1 136 34.5 2.58
8 x 8 x 1/4 25.82 0.233 31.3 31.3 7.10 70.7 17.7 3.15 20.5 111 28.1 2.60
8 x 8 x 3/16 19.63 0.174 43.0 43.0 5.37 54.4 13.6 3.18 15.7 84.5 21.3 2.62
7 x 7 x 5/8 50.81 0.581 9.0 9.0 14.0 93.3 26.7 2.58 33.1 158 47.1 2.17
7 x 7 x 1/2 42.05 0.465 12.1 12.1 11.6 80.5 23.0 2.63 27.9 133 39.3 2.20
7 x 7 x 3/8 32.58 0.349 17.1 17.1 8.97 64.9 18.6 2.69 22.1 105 30.7 2.23
7 x 7 x 5/16 27.59 0.291 21.1 21.1 7.59 56.1 16.0 2.72 18.9 89.7 26.1 2.25
7 x 7 x 1/4 22.42 0.233 27.0 27.0 6.17 46.5 13.3 2.75 15.5 73.5 21.3 2.27
7 x 7 x 3/16 17.08 0.174 37.2 37.2 4.67 36.0 10.3 2.77 11.9 56.1 16.2 2.28
6 x 6 x 5/8 42.30 0.581 7.3 7.3 11.7 55.1 18.4 2.17 23.2 94.9 33.4 1.83
6 x 6 x 1/2 35.24 0.465 9.9 9.9 9.74 48.2 16.1 2.23 19.8 81.1 28.1 1.87
6 x 6 x 3/8 27.48 0.349 14.2 14.2 7.58 39.4 13.1 2.28 15.8 64.6 22.1 1.90
6 x 6 x 5/16 23.34 0.291 17.6 17.6 6.43 34.3 11.4 2.31 13.6 55.4 18.9 1.92
6 x 6 x 1/4 19.02 0.233 22.8 22.8 5.24 28.6 9.54 2.34 11.2 45.6 15.4 1.93
6 x 6 x 3/16 14.53 0.174 31.5 31.5 3.98 22.3 7.42 2.37 8.63 35.0 11.8 1.95
6 x 6 x 1/8 9.86 0.116 48.7 48.7 2.70 15.5 5.15 2.39 5.92 23.9 8.03 1.97
5-1/2 x 5-1/2 x 3/8 24.93 0.349 12.8 12.8 6.88 29.7 10.8 2.08 13.1 49.0 18.4 1.73
5-1/2 x 5-1/2 x 5/16 21.21 0.291 15.9 15.9 5.85 25.9 9.43 2.11 11.3 42.2 15.7 1.75
5-1/2 x 5-1/2 x 1/4 17.32 0.233 20.6 20.6 4.77 21.7 7.90 2.13 9.32 34.8 12.9 1.77
5-1/2 x 5-1/2 x 3/16 13.25 0.174 28.6 28.6 3.63 17.0 6.17 2.16 7.19 26.7 9.85 1.78
5-1/2 x 5-1/2 x 1/8 9.01 0.116 44.4 44.4 2.46 11.8 4.30 2.19 4.95 18.3 6.72 1.80
5 x 5 x 1/2 28.43 0.465 7.8 7.8 7.88 26.0 10.4 1.82 13.1 44.6 18.7 1.53
5 x 5 x 3/8 22.37 0.349 11.3 11.3 6.18 21.7 8.67 1.87 10.6 36.1 14.9 1.57
5 x 5 x 5/16 19.08 0.291 14.2 14.2 5.26 19.0 7.61 1.90 9.16 31.2 12.8 1.58
5 x 5 x 1/4 15.62 0.233 18.5 18.5 4.30 16.0 6.41 1.93 7.61 25.8 10.5 1.60
5 x 5 x 3/16 11.97 0.174 25.7 25.7 3.28 12.6 5.03 1.96 5.89 19.9 8.08 1.62
5 x 5 x 1/8 8.16 0.116 40.1 40.1 2.23 8.80 3.52 1.99 4.07 13.7 5.53 1.63
4-1/2 x 4-1/2 x 1/2 25.03 0.465 6.7 6.7 6.95 18.0 8.02 1.61 10.2 31.3 14.8 1.37
4-1/2 x 4-1/2 x 3/8 19.82 0.349 9.9 9.9 5.48 15.3 6.78 1.67 8.36 25.7 11.9 1.40
4-1/2 x 4-1/2 x 5/16 16.96 0.291 12.5 12.5 4.68 13.5 5.99 1.70 7.27 22.3 10.2 1.42
4-1/2 x 4-1/2 x 1/4 13.91 0.233 16.3 16.3 3.84 11.4 5.08 1.73 6.06 18.5 8.44 1.43
4-1/2 x 4-1/2 x 3/16 10.70 0.174 22.9 22.9 2.93 9.02 4.01 1.75 4.71 14.4 6.49 1.45
4-1/2 x 4-1/2 x 1/8 7.31 0.116 35.8 35.8 2.00 6.35 2.82 1.78 3.27 9.92 4.45 1.47
4 x 4 x 1/2 21.63 0.465 5.6 5.6 6.02 11.9 5.95 1.41 7.70 21.0 11.2 1.20
4 x 4 x 3/8 17.27 0.349 8.5 8.5 4.78 10.3 5.13 1.46 6.39 17.5 9.14 1.23
4 x 4 x 5/16 14.83 0.291 10.7 10.7 4.10 9.14 4.57 1.49 5.59 15.3 7.91 1.25
4 x 4 x 1/4 12.21 0.233 14.2 14.2 3.37 7.80 3.90 1.52 4.69 12.8 6.56 1.27
4 x 4 x 3/16 9.42 0.174 20.0 20.0 2.58 6.21 3.10 1.55 3.67 9.96 5.07 1.28
4 x 4 x 1/8 6.46 0.116 31.5 31.5 1.77 4.40 2.20 1.58 2.56 6.91 3.49 1.30
3-1/2 x 3-1/2 x 3/8 14.72 0.349 7.0 7.0 4.09 6.48 3.70 1.26 4.69 11.2 6.77 1.07
3-1/2 x 3-1/2 x 5/16 12.70 0.291 9.0 9.0 3.52 5.84 3.34 1.29 4.14 9.89 5.90 1.08
3-1/2 x 3-1/2 x 1/4 10.51 0.233 12.0 12.0 2.91 5.04 2.88 1.32 3.50 8.35 4.92 1.10
3-1/2 x 3-1/2 x 3/16 8.15 0.174 17.1 17.1 2.24 4.05 2.31 1.35 2.76 6.56 3.83 1.12
3-1/2 x 3-1/2 x 1/8 5.61 0.116 27.2 27.2 1.54 2.90 1.66 1.37 1.93 4.58 2.65 1.13
3 x 3 x 3/8 12.17 0.349 5.6 5.6 3.39 3.77 2.51 1.05 3.25 6.64 4.74 0.90
3 x 3 x 5/16 10.58 0.291 7.3 7.3 2.94 3.45 2.30 1.08 2.90 5.94 4.18 0.92
3 x 3 x 1/4 8.81 0.233 9.9 9.9 2.44 3.02 2.01 1.11 2.48 5.08 3.52 0.93
3 x 3 x 3/16 6.87 0.174 14.2 14.2 1.89 2.46 1.64 1.14 1.97 4.03 2.76 0.95
3 x 3 x 1/8 4.75 0.116 22.9 22.9 1.30 1.78 1.19 1.17 1.40 2.84 1.92 0.97
2-1/2 x 2-1/2 x 5/16 8.45 0.291 5.6 5.6 2.35 1.82 1.45 0.879 1.88 3.20 2.74 0.75
2-1/2 x 2-1/2 x 1/4 7.11 0.233 7.7 7.7 1.97 1.63 1.30 0.908 1.63 2.79 2.35 0.77
2-1/2 x 2-1/2 x 3/16 5.59 0.174 11.4 11.4 1.54 1.35 1.08 0.937 1.32 2.25 1.86 0.78
2-1/2 x 2-1/2 x 1/8 3.90 0.116 18.6 18.6 1.07 0.998 0.798 0.965 0.947 1.61 1.31 0.80
2-1/4 x 2-1/4 x 1/4 6.26 0.233 6.7 6.7 1.74 1.13 1.00 0.805 1.28 1.96 1.85 0.68
2-1/4 x 2-1/4 x 3/16 4.96 0.174 9.9 9.9 1.37 0.952 0.847 0.835 1.04 1.60 1.48 0.70
2-1/4 x 2-1/4 x 1/8 3.48 0.116 16.4 16.4 0.96 0.712 0.633 0.863 0.755 1.15 1.05 0.72
2 x 2 x 1/4 5.41 0.233 5.6 5.6 1.51 0.745 0.745 0.703 0.964 1.31 1.41 0.60
2 x 2 x 3/16 4.32 0.174 8.5 8.5 1.19 0.640 0.640 0.732 0.797 1.09 1.14 0.62
2 x 2 x 1/8 3.05 0.116 14.2 14.2 0.84 0.486 0.486 0.761 0.584 0.796 0.817 0.63
1-3/4 x 1-3/4 x 3/16 3.68 0.174 7.1 7.1 1.02 0.405 0.462 0.630 0.585 0.699 0.844 0.53
1-5/8 x 1-5/8 x 3/16 3.36 0.174 6.3 6.3 0.93 0.312 0.384 0.579 0.491 0.544 0.712 0.49
1-5/8 x 1-5/8 x 1/8 2.42 0.116 11.0 11.0 0.67 0.246 0.302 0.608 0.370 0.410 0.522 0.51
1-1/2 x 1-1/2 x 3/16 3.04 0.174 5.6 5.6 0.84 0.235 0.314 0.528 0.406 0.414 0.592 0.45
1-1/2 x 1-1/2 x 1/8 2.20 0.116 9.9 9.9 0.61 0.188 0.251 0.556 0.309 0.316 0.438 0.47
1-1/4 x 1-1/4 x 3/16 2.40 0.174 4.2 4.2 0.67 0.121 0.194 0.425 0.259 0.218 0.383 0.37
1-1/4 x 1-1/4 x 1/8 1.78 0.116 7.8 7.8 0.49 0.101 0.162 0.454 0.204 0.174 0.292 0.38

1)

  • b - nominal width minus 3 times the design wall thickness t
  • t  - design wall thickness
  • h - nominal depth minus 3 times the design wall thickness  t
  • I - moment of inertia of cross-section
  • S - elastic section modulus
  • r - radius of gyration
  • Z - plastic section modulus

2)Note that the cross sectional areas are calculated for sections with rounded corners (outside corner radii equal to 2 times the design wall thickness).

3) Note that nominal thickness may not be the same as actual thickness. Actual thickness may vary with manufacturing methods.

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