HSS8×4×5/8 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.

HSS8×4×5/8 is a rectangular tube 8 in. by 4 in. with a 5/8 in. nominal wall.

At 42.3 lb per foot it is the heaviest 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 = 20.5 in³ and its moment of inertia Ix = 82 in⁴, with a plastic modulus Zx = 27.4 in³.

Detailing dimensions

Depth (Ht)8"
Width (B)4"
Nominal wall (t)5/8"

Section properties

Weight42.3 lb/ft
Area (A)11.7 in²
Ix82 in⁴
Sx20.5 in³
Zx27.4 in³
rx2.64 in
Iy26.6 in⁴
Sy13.3 in³
Zy16.6 in³
ry1.51 in
J70.3 in⁴

Other HSS8×4 sizes

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

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

All HSS8×4 sizes and dimensions →

Similar weight HSS shapes

Comparable 42.3 lb/ft sections in other HSS tube sizes.

HSS6×6×5/842.3 lb/ft · Sx 18.4 in³HSS16.000×0.25042.09 lb/ft · Sx 44.8 in³HSS10×4×1/242.05 lb/ft · Sx 25.8 in³HSS9×5×1/242.05 lb/ft · Sx 25.5 in³HSS8×6×1/242.05 lb/ft · Sx 24.6 in³HSS7×7×1/242.05 lb/ft · Sx 23 in³HSS14×4×3/842.79 lb/ft · Sx 36 in³HSS12×6×3/842.79 lb/ft · Sx 35.9 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 HSS8×4×5/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing