HSS12×3×3/16 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.

HSS12×3×3/16 is a rectangular tube 12 in. by 3 in. with a 3/16 in. nominal wall.

At 18.35 lb per foot it is the lightest of the 3 HSS12×3 sizes, which run from 18.35 to 29.72 lb/ft.

For strong-axis bending its section modulus is Sx = 13.3 in³ and its moment of inertia Ix = 79.6 in⁴, with a plastic modulus Zx = 17.5 in³.

Detailing dimensions

Depth (Ht)12"
Width (B)3"
Nominal wall (t)3/16"

Section properties

Weight18.35 lb/ft
Area (A)5.02 in²
Ix79.6 in⁴
Sx13.3 in³
Zx17.5 in³
rx3.98 in
Iy8.72 in⁴
Sy5.81 in³
Zy6.4 in³
ry1.32 in
J26.8 in⁴

Other HSS12×3 sizes

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

HSS12×3×1/4HSS12×3×5/16

Similar weight HSS shapes

Comparable 18.35 lb/ft sections in other HSS tube sizes.

HSS5.000×0.37518.54 lb/ft · Sx 5.55 in³HSS7.000×0.25018.04 lb/ft · Sx 8.11 in³HSS9.625×0.18818.97 lb/ft · Sx 12 in³HSS6.000×0.31218.97 lb/ft · Sx 7.11 in³HSS6.625×0.28018.99 lb/ft · Sx 7.96 in³HSS6.875×0.25017.71 lb/ft · Sx 7.81 in³HSS10×2×1/419.02 lb/ft · Sx 10.5 in³HSS9×3×1/419.02 lb/ft · Sx 10.7 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 HSS12×3×3/16 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing