Steel Beam Sizes / AISC / HSS Rectangular / HSS 7x3x1/8
HSS 7x3x1/8 Steel Beam Dimensions and Properties
AISC Rectangular HSS · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
HSS 7x3x1/8 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 8.16 lb/ft | 12.10 kg/m |
| Height | 7.00 in | 178.00 mm |
| Width | 3.00 in | 76.20 mm |
| Nominal tw | 0.125 in | 3.180 mm |
| Design tw | 0.116 in | 2.950 mm |
| Area | 2.23 in² | 1,440.00 mm² |
| Ix | 13.80 in⁴ | 5,740,000 mm⁴ |
| Iy | 3.71 in⁴ | 1,540,000 mm⁴ |
| Sx | 3.95 in³ | 64,700.00 mm³ |
| Sy | 2.48 in³ | 40,600.00 mm³ |
| Zx | 4.93 in³ | 80,800.00 mm³ |
| Zy | 2.73 in³ | 44,700.00 mm³ |
| rx | 2.49 in | 63.20 mm |
| ry | 1.29 in | 32.80 mm |
| J | 9.48 in⁴ | 3,950,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 7x3x1/8.
Lighter in Rectangular HSS
HSS 4x3x3/16
- Weight
- 8.2 lb/ft (-0.1%)
- Depth
- 4.00 in (-43%)
- Ix
- 4.9 in⁴ (-64%)
Heavier in Rectangular HSS
HSS 3x2x5/16
- Weight
- 8.5 lb/ft (+3.6%)
- Depth
- 3.00 in (-57%)
- Ix
- 2.4 in⁴ (-83%)
Closest Iₓ in Rectangular HSS
HSS 5x3x3/8
- Weight
- 17.3 lb/ft (+112%)
- Depth
- 5.00 in (-29%)
- Ix
- 14.1 in⁴ (+2.2%)
Source: AISC Shapes Database v16.0 · Methodology