HSS4×3×5/16 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.

HSS4×3×5/16 is a rectangular tube 4 in. by 3 in. with a 5/16 in. nominal wall.

At 12.7 lb per foot it is one of the 5 HSS4×3 sizes, which run from 5.61 to 14.72 lb/ft.

For strong-axis bending its section modulus is Sx = 3.57 in³ and its moment of inertia Ix = 7.14 in⁴, with a plastic modulus Zx = 4.51 in³.

Detailing dimensions

Depth (Ht)4"
Width (B)3"
Nominal wall (t)5/16"

Section properties

Weight12.7 lb/ft
Area (A)3.52 in²
Ix7.14 in⁴
Sx3.57 in³
Zx4.51 in³
rx1.42 in
Iy4.52 in⁴
Sy3.02 in³
Zy3.69 in³
ry1.13 in
J9.41 in⁴

Other HSS4×3 sizes

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

HSS4×3×1/8HSS4×3×3/16HSS4×3×1/4HSS4×3×3/8

All HSS4×3 sizes and dimensions →

Similar weight HSS shapes

Comparable 12.7 lb/ft sections in other HSS tube sizes.

HSS5×2×5/1612.7 lb/ft · Sx 3.74 in³HSS3-1/2×3-1/2×5/1612.7 lb/ft · Sx 3.34 in³HSS5.000×0.25012.69 lb/ft · Sx 3.97 in³HSS6.625×0.18812.94 lb/ft · Sx 5.54 in³HSS4.000×0.31312.34 lb/ft · Sx 2.93 in³HSS5.000×0.25813.08 lb/ft · Sx 4.08 in³HSS6×2×1/412.21 lb/ft · Sx 4.37 in³HSS5×3×1/412.21 lb/ft · Sx 4.29 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 HSS4×3×5/16 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing