HSS20×8×3/8 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.

HSS20×8×3/8 is a rectangular tube 20 in. by 8 in. with a 3/8 in. nominal wall.

At 68.31 lb per foot it is one of the 7 HSS20×8 sizes, which run from 57.36 to 168.18 lb/ft.

For strong-axis bending its section modulus is Sx = 92.6 in³ and its moment of inertia Ix = 926 in⁴, with a plastic modulus Zx = 117 in³.

Detailing dimensions

Depth (Ht)20"
Width (B)8"
Nominal wall (t)3/8"

Section properties

Weight68.31 lb/ft
Area (A)18.7 in²
Ix926 in⁴
Sx92.6 in³
Zx117 in³
rx7.03 in
Iy222 in⁴
Sy55.6 in³
Zy61.5 in³
ry3.44 in
J586 in⁴

Other HSS20×8 sizes

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

HSS20×8×5/16HSS20×8×1/2HSS20×8×5/8HSS20×8×3/4HSS20×8×7/8HSS20×8×1

All HSS20×8 sizes and dimensions →

Similar weight HSS shapes

Comparable 68.31 lb/ft sections in other HSS tube sizes.

HSS18×10×3/868.31 lb/ft · Sx 91.1 in³HSS16×12×3/868.31 lb/ft · Sx 87.7 in³HSS14×14×3/868.31 lb/ft · Sx 82.5 in³HSS14×4×5/867.82 lb/ft · Sx 53.3 in³HSS12×6×5/867.82 lb/ft · Sx 53.4 in³HSS10×8×5/867.82 lb/ft · Sx 50.5 in³HSS9×9×5/867.82 lb/ft · Sx 47.9 in³HSS13.375×0.50068.82 lb/ft · Sx 58.8 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 HSS20×8×3/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing