HSS7x7x1/4 (HSS7x7x.25) – HSS Shapes - Square

HSS7x7x1/4 is a 7 in (178 mm) square hollow section with a 1/4 in (6 mm) nominal wall, weighing 22.42 lb/ft (33.4 kg/m).

Square HSS (Hollow Structural Sections) are closed, tube-shaped sections with equal depth and width. The closed profile gives excellent torsional stiffness and identical strength about both axes, a meaningful advantage over open shapes such as W or C sections. That symmetry makes square HSS a natural choice for columns, particularly where architecturally exposed structural steel is part of the design, and for posts, bracing and light framing where equal biaxial capacity and a clean profile matter more than bending capacity in one direction.

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Dimensions

PropertyValue
Nominal Weight (lb/ft)22.42
Depth of Section (in)7.0
Depth of Flat Wall (in)6.3
Width of Section (in)7.0
Width of Flat Wall (in)6.3
Nominal Thickness (in)0.25

Full sortable table: Dimensions table for this family

Section Properties

PropertyValue
Ix (in⁴)46.5
Zx (in³)15.5
Sx (in³)13.3
rx (in)2.75
Iy (in⁴)46.5
Zy (in³)15.5
Sy (in³)13.3
ry (in)2.75
J (in⁴)73.5
C (in³)21.3

Full sortable table: Section properties table for this family