HSS7×7×3/8 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.

HSS7×7×3/8 is a square tube 7 in. by 7 in. with a 3/8 in. nominal wall.

At 32.58 lb per foot it is one of the 7 HSS7×7 sizes, which run from 11.56 to 50.81 lb/ft.

For strong-axis bending its section modulus is Sx = 18.6 in³ and its moment of inertia Ix = 65 in⁴, with a plastic modulus Zx = 22.1 in³.

Detailing dimensions

Depth (Ht)7"
Width (B)7"
Nominal wall (t)3/8"

Section properties

Weight32.58 lb/ft
Area (A)8.97 in²
Ix65 in⁴
Sx18.6 in³
Zx22.1 in³
rx2.69 in
Iy65 in⁴
Sy18.6 in³
Zy22.1 in³
ry2.69 in
J105 in⁴

Other HSS7×7 sizes

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

HSS7×7×1/8HSS7×7×3/16HSS7×7×1/4HSS7×7×5/16HSS7×7×1/2HSS7×7×5/8

All HSS7×7 sizes and dimensions →

Similar weight HSS shapes

Comparable 32.58 lb/ft sections in other HSS tube sizes.

HSS10×4×3/832.58 lb/ft · Sx 20.8 in³HSS9×5×3/832.58 lb/ft · Sx 20.5 in³HSS8×6×3/832.58 lb/ft · Sx 19.8 in³HSS16×4×1/432.63 lb/ft · Sx 31.6 in³HSS14×6×1/432.63 lb/ft · Sx 31.7 in³HSS12×8×1/432.63 lb/ft · Sx 30.6 in³HSS10×10×1/432.63 lb/ft · Sx 28.3 in³HSS6.625×0.50032.74 lb/ft · Sx 13 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 HSS7×7×3/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing