Hollow Structural Sections - Pirate4x4.Com

Table 1: Metric Conversion of Depth/Width
for Rectangular & Square HSS
Depth & Width Dimensions
U.S. Customary U.S. Customary Metric* Units Metric Units U.S. Customary U.S. Customary Metric* Units Metric Units
Units Units (Exact Conversion) Rounded Units Units (Exact Conversion) Rounded
Inches Inches mm mm Inches Inches mm mm
32 32.000 812.800 812.8 6 6.000 152.400 152.4
30 30.000 762.000 762.0 5 1/2 5.500 139.700 139.7
28 28.000 711.200 711.2 5 5.000 127.000 127.0
26 26.000 660.400 660.4 4 1/2 4.500 114.300 114.3
24 24.000 609.600 609.6 4 4.000 101.600 101.6
22 22.000 558.800 558.8 3 1/2 3.500 88.900 88.9
20 20.000 508.000 508.0 3 3.000 76.200 76.2
18 18.000 457.200 457.2 2 1/2 2.500 63.500 63.5
16 16.000 406.400 406.4 2 1/4 2.250 57.150 57.2
14 14.000 355.600 355.6 2 2.000 50.800 50.8
12 12.000 304.800 304.8 1 3/4 1.750 44.450 44.5
10 10.000 254.000 254.0 1 5/8 1.625 41.275 41.3
9 9.000 228.600 228.6 1 1/2 1.500 38.100 38.1
8 8.000 203.200 203.2 1 1/4 1.250 31.750 31.8
7 7.000 177.800 177.8 1 1.000 25.400 25.4
Table 3: Metric Conversion of
Outside Diameter for Round HSS
Outside Diameter Dimensions
U.S. Customary Metric* Units Metric Units U.S. Customary Metric* Units Metric Units
Units (Exact Conversion) (Rounded) Units (Exact Conversion) (Rounded)
Inches mm mm Inches mm mm
20.000 508.0000 508.0 6.625 168.2750 168.3
18.000 457.2000 457.2 6.125 155.5750 155.6
16.000 406.4000 406.4 6.000 152.4000 152.4
14.000 355.6000 355.6 5.563 141.3002 141.3
12.750 323.8500 323.9 5.500 139.7000 139.7
12.500 317.5000 317.5 5.000 127.0000 127.0
11.250 285.7500 285.8 4.500 114.3000 114.3
10.750 273.0500 273.1 4.000 101.6000 101.6
10.000 254.0000 254.0 3.500 88.9000 88.9
9.625 244.4750 244.5 3.000 76.2000 76.2
8.750 222.2500 222.3 2.875 73.0250 73.0
8.625 219.0750 219.1 2.500 63.5000 63.5
7.625 193.6750 193.7 2.375 60.3250 60.3
7.500 190.5000 190.5 1.900 48.2600 48.3
7.000 177.8000 177.8 1.660 42.1640 42.2
6.875 174.6250 174.6