HSS8×8×5/8 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.

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

At 59.32 lb per foot it is the heaviest of the 7 HSS8×8 sizes, which run from 13.26 to 59.32 lb/ft.

For strong-axis bending its section modulus is Sx = 36.5 in³ and its moment of inertia Ix = 146 in⁴, with a plastic modulus Zx = 44.7 in³.

Detailing dimensions

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

Section properties

Weight59.32 lb/ft
Area (A)16.4 in²
Ix146 in⁴
Sx36.5 in³
Zx44.7 in³
rx2.99 in
Iy146 in⁴
Sy36.5 in³
Zy44.7 in³
ry2.99 in
J244 in⁴

Other HSS8×8 sizes

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

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

All HSS8×8 sizes and dimensions →

Similar weight HSS shapes

Comparable 59.32 lb/ft sections in other HSS tube sizes.

HSS12×4×5/859.32 lb/ft · Sx 40.8 in³HSS10×6×5/859.32 lb/ft · Sx 40.2 in³HSS9×7×5/859.32 lb/ft · Sx 38.7 in³HSS18.000×0.31359.09 lb/ft · Sx 70.4 in³HSS24×12×1/459.85 lb/ft · Sx 106 in³HSS22×14×1/459.85 lb/ft · Sx 104 in³HSS20×16×1/459.85 lb/ft · Sx 100 in³HSS18×18×1/459.85 lb/ft · Sx 95.6 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 HSS8×8×5/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing