Steel Beam Sizes / AISC / HSS Rectangular / HSS 12x4x3/8

HSS 12x4x3/8 Steel Beam Dimensions and Properties

AISC Rectangular HSS · v16.0

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

HSS 12x4x3/8 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 37.69 lb/ft 56.00 kg/m
Height 12.00 in 305.00 mm
Width 4.00 in 102.00 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.349 in 8.860 mm
Area 10.40 in² 6,710.00 mm²
Ix 168.00 in⁴ 69,900,000 mm⁴
Iy 28.90 in⁴ 12,000,000 mm⁴
Sx 28.00 in³ 459,000.00 mm³
Sy 14.50 in³ 238,000.00 mm³
Zx 36.70 in³ 601,000.00 mm³
Zy 16.60 in³ 272,000.00 mm³
rx 4.02 in 102.00 mm
ry 1.67 in 42.40 mm
J 84.10 in⁴ 35,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 12x4x3/8.

Lighter in Rectangular HSS

HSS 10x8x5/16

Weight
36.1 lb/ft (-4.2%)
Depth
10.00 in (-17%)
Ix
145.0 in⁴ (-14%)

Heavier in Rectangular HSS

HSS 14x10x1/4

Weight
39.4 lb/ft (+4.6%)
Depth
14.00 in (+17%)
Ix
310.0 in⁴ (+85%)

Closest Iₓ in Rectangular HSS

HSS 10x8x3/8

Weight
42.8 lb/ft (+14%)
Depth
10.00 in (-17%)
Ix
169.0 in⁴ (+0.6%)
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Source: AISC Shapes Database v16.0 · Methodology