HSS8.625x.188 – HSS Shapes - Round

HSS8.625x.188 is an 8.625 in (219 mm) diameter round hollow section with a 0.188 in (5 mm) nominal wall, weighing 16.96 lb/ft (25.2 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)16.96
Outside Diameter (in)8.625
Nominal Thickness (in)0.188

Full sortable table: Dimensions table for this family

Section Properties

PropertyValue
Ix (in⁴)41.3
Zx (in³)12.4
Sx (in³)9.57
rx (in)2.99
Iy (in⁴)41.3
Zy (in³)12.4
Sy (in³)9.57
ry (in)2.99
J (in⁴)82.5
C (in³)19.1

Full sortable table: Section properties table for this family