HSS4×3×3/8 square/rectangular HSS tube

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

HSS4×3×3/8 is a rectangular tube 4 in. by 3 in. with a 3/8 in. nominal wall.

At 14.72 lb per foot it is the heaviest of the 5 HSS4×3 sizes, which run from 5.61 to 14.72 lb/ft.

For strong-axis bending its section modulus is Sx = 3.97 in³ and its moment of inertia Ix = 7.93 in⁴, with a plastic modulus Zx = 5.12 in³.

Detailing dimensions

Depth (Ht)4"
Width (B)3"
Nominal wall (t)3/8"

Section properties

Weight14.72 lb/ft
Area (A)4.09 in²
Ix7.93 in⁴
Sx3.97 in³
Zx5.12 in³
rx1.39 in
Iy5.01 in⁴
Sy3.34 in³
Zy4.18 in³
ry1.11 in
J10.6 in⁴

Other HSS4×3 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

HSS4×3×1/8HSS4×3×3/16HSS4×3×1/4HSS4×3×5/16

All HSS4×3 sizes and dimensions →

Similar weight HSS shapes

Comparable 14.72 lb/ft sections in other HSS tube sizes.

HSS5×2×3/814.72 lb/ft · Sx 4.14 in³HSS3-1/2×3-1/2×3/814.72 lb/ft · Sx 3.71 in³HSS7.500×0.18814.7 lb/ft · Sx 7.17 in³HSS5.563×0.25814.63 lb/ft · Sx 5.12 in³HSS6×2×5/1614.83 lb/ft · Sx 5.11 in³HSS5×3×5/1614.83 lb/ft · Sx 5.03 in³HSS4×4×5/1614.83 lb/ft · Sx 4.57 in³HSS10×2×3/1614.53 lb/ft · Sx 8.19 in³

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need HSS4×3×3/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing