HSS8×4×3/8 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.

HSS8×4×3/8 is a rectangular tube 8 in. by 4 in. with a 3/8 in. nominal wall.

At 27.48 lb per foot it is one of the 7 HSS8×4 sizes, which run from 9.86 to 42.3 lb/ft.

For strong-axis bending its section modulus is Sx = 14.7 in³ and its moment of inertia Ix = 58.7 in⁴, with a plastic modulus Zx = 18.8 in³.

Detailing dimensions

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

Section properties

Weight27.48 lb/ft
Area (A)7.58 in²
Ix58.7 in⁴
Sx14.7 in³
Zx18.8 in³
rx2.78 in
Iy19.6 in⁴
Sy9.8 in³
Zy11.5 in³
ry1.61 in
J49.3 in⁴

Other HSS8×4 sizes

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

HSS8×4×1/8HSS8×4×3/16HSS8×4×1/4HSS8×4×5/16HSS8×4×1/2HSS8×4×5/8

All HSS8×4 sizes and dimensions →

Similar weight HSS shapes

Comparable 27.48 lb/ft sections in other HSS tube sizes.

HSS10×2×3/827.48 lb/ft · Sx 14.3 in³HSS9×3×3/827.48 lb/ft · Sx 14.7 in³HSS7×5×3/827.48 lb/ft · Sx 14.1 in³HSS6×6×3/827.48 lb/ft · Sx 13.2 in³HSS12×2×5/1627.59 lb/ft · Sx 17.4 in³HSS10×4×5/1627.59 lb/ft · Sx 18 in³HSS9×5×5/1627.59 lb/ft · Sx 17.7 in³HSS8×6×5/1627.59 lb/ft · Sx 17.1 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 HSS8×4×3/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing