HSS7×3×5/16 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.

HSS7×3×5/16 is a rectangular tube 7 in. by 3 in. with a 5/16 in. nominal wall.

At 19.08 lb per foot it is one of the 6 HSS7×3 sizes, which run from 8.16 to 28.43 lb/ft.

For strong-axis bending its section modulus is Sx = 8.54 in³ and its moment of inertia Ix = 29.9 in⁴, with a plastic modulus Zx = 11.1 in³.

Detailing dimensions

Depth (Ht)7"
Width (B)3"
Nominal wall (t)5/16"

Section properties

Weight19.08 lb/ft
Area (A)5.26 in²
Ix29.9 in⁴
Sx8.54 in³
Zx11.1 in³
rx2.38 in
Iy7.74 in⁴
Sy5.16 in³
Zy6.05 in³
ry1.21 in
J20.9 in⁴

Other HSS7×3 sizes

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

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

All HSS7×3 sizes and dimensions →

Similar weight HSS shapes

Comparable 19.08 lb/ft sections in other HSS tube sizes.

HSS8×2×5/1619.08 lb/ft · Sx 8.43 in³HSS6×4×5/1619.08 lb/ft · Sx 8.27 in³HSS5×5×5/1619.08 lb/ft · Sx 7.62 in³HSS10×2×1/419.02 lb/ft · Sx 10.5 in³HSS9×3×1/419.02 lb/ft · Sx 10.7 in³HSS8×4×1/419.02 lb/ft · Sx 10.6 in³HSS7×5×1/419.02 lb/ft · Sx 10.2 in³HSS6×6×1/419.02 lb/ft · Sx 9.54 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 HSS7×3×5/16 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing