HSS7x1/4 (HSS7x.250) – HSS Shapes - Round

HSS7x1/4 is a 7 in (178 mm) diameter round hollow section with a 1/4 in (6 mm) nominal wall, weighing 18.04 lb/ft (26.8 kg/m).

Round HSS are closed, circular tube sections, sharing the torsional and biaxial strength advantages of rectangular HSS but in a circular profile that's often preferred where appearance matters — exposed columns, canopy supports, and architectural framing — as well as more utilitarian uses like handrail posts and bollards. The circular shape distributes compressive and torsional loads evenly in every direction, making round HSS a strong, materially efficient choice wherever a round column or post is wanted rather than a square or rectangular one.

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Dimensions

PropertyValue
Nominal Weight (lb/ft)18.04
Outside Diameter (in)7.0
Nominal Thickness (in)0.25

Full sortable table: Dimensions table for this family

Section Properties

PropertyValue
Ix (in⁴)28.4
Zx (in³)10.7
Sx (in³)8.11
rx (in)2.39
Iy (in⁴)28.4
Zy (in³)10.7
Sy (in³)8.11
ry (in)2.39
J (in⁴)56.8
C (in³)16.2

Full sortable table: Section properties table for this family