HSS8×4×1/8 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.

HSS8×4×1/8 is a rectangular tube 8 in. by 4 in. with a 1/8 in. nominal wall.

At 9.86 lb per foot it is the lightest 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 = 5.73 in³ and its moment of inertia Ix = 22.9 in⁴, with a plastic modulus Zx = 7.02 in³.

Detailing dimensions

Depth (Ht)8"
Width (B)4"
Nominal wall (t)1/8"

Section properties

Weight9.86 lb/ft
Area (A)2.7 in²
Ix22.9 in⁴
Sx5.73 in³
Zx7.02 in³
rx2.92 in
Iy7.9 in⁴
Sy3.95 in³
Zy4.36 in³
ry1.71 in
J18.7 in⁴

Other HSS8×4 sizes

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

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

All HSS8×4 sizes and dimensions →

Similar weight HSS shapes

Comparable 9.86 lb/ft sections in other HSS tube sizes.

HSS10×2×1/89.86 lb/ft · Sx 5.7 in³HSS7×5×1/89.86 lb/ft · Sx 5.52 in³HSS6×6×1/89.86 lb/ft · Sx 5.15 in³HSS4.000×0.25010 lb/ft · Sx 2.45 in³HSS5.000×0.1889.67 lb/ft · Sx 3.08 in³HSS4×2-1/2×1/49.66 lb/ft · Sx 2.66 in³HSS4.000×0.2379.53 lb/ft · Sx 2.34 in³HSS3×2-1/2×5/169.51 lb/ft · Sx 1.94 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 HSS8×4×1/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing