Common context
Common project roles include columns, braces, truss chords and webs, canopies, equipment framing, and architecturally exposed structural steel.
AISC v16.0 · HSS shape
HSS1.660X0.140
HSS1.660X0.140 weighs 2.27 lb/ft, has a outside diameter of 1.66 in, a cross-sectional area of 0.625 in², and an x-axis elastic section modulus Sx of 0.222 in³. Open the full US customary property record or generate 2D, data, report, and 3D reference files locally in your browser.
Nominal profile
Units · inches
Building nominal profile…
- Weight
- 2.27 lb/ft
- Area
- 0.625 in²
- Outside diameter
- 1.66 in
- Elastic Sx
- 0.222 in³
From designation to geometry
Reading the HSS1.660X0.140 record
The listed outside diameter OD is 1.66 in.
The designation carries a nominal wall thickness tnom of 0.14 in. This record lists design wall thickness tdes = 0.13 in, a 0.01 in difference. Keep the two fields separate when transferring data; do not infer a product specification or substitute a different HSS dataset from the name alone.
Ix = 0.184 in⁴ and Iy = 0.184 in⁴ refer to the database x- and y-axes. The two listed values are equal. Axis letters are labels, not a guarantee that x is always the larger axis. These are geometric properties, not allowable loads or complete member capacities.
Match the axis and dimension conventions to the figures in the AISC v16.0 workbook Readme. The profile above simplifies manufacturing geometry; its outline is not used to recalculate the published properties.
Worked quantity example
Nominal weight for HSS1.660X0.140
Assume 3 pieces, each 20 ft (6.096 m) long. This is a hypothetical quantity example, not a stock-length or lifting recommendation.
| Quantity | Calculation | Nominal pounds | Kilogram equivalent |
|---|---|---|---|
| One 20 ft piece | 20 ft × 2.27 lb/ft | 45.4 lb | 20.593 kg |
| 3 pieces | 3 × 45.4 lb | 136.2 lb | 61.779 kg |
Conversion: 1 lb = 0.45359237 kg; displayed results are rounded. This multiplication excludes connection plates, bolts, weld metal, coatings, cutting allowances and actual material variation. Use the material takeoff for your own lengths and quantities.
Shape family context
What is a hollow structural section?
An HSS is a closed structural tube with square, rectangular, or round outside geometry. Closed sections provide useful biaxial and torsional behavior and are often selected for columns, braces, trusses, exposed framing, and space-conscious conditions.
Learn how shape properties workDetailing watch
Distinguish nominal from design wall thickness, check corner and weld-seam conventions, and coordinate connection access, venting, drainage, galvanizing, and concealed weld requirements.
Portable reference files
Download HSS1.660X0.140 your way.
Every file is generated locally in your browser from the same nominal profile and AISC v16.0 reference record.
CAD, vector, and image
Use the profile in CAD, illustration, plotting, reports, or presentations.
Tables and portable data
Take a printable datasheet, spreadsheet, structured record, or plain-text table.
Extrude a nominal member
Enter a member length in inches. Mesh files are generated from the nominal reference profile.
One-click package
Complete 2D + data bundle
DXF, SVG, EPS, HPGL, PDF, PNG, WebP, CSV, XLSX, JSON, XML, YAML, TXT, and Markdown in one ZIP.
Choose a format. Files stay in your browser and are not uploaded.
Dimensions & properties
HSS1.660X0.140 reference data.
Values below are derived from the AISC Shapes Database v16.0 in US customary units. A dash indicates that a property is not applicable or not included for this family.
Nominal dimensions
- W Nominal weight
- 2.27 lb/ft
- A Area
- 0.625 in²
- OD Outside diameter
- 1.66 in
- tnom Nominal wall thickness
- 0.14 in
- tdes Design wall thickness
- 0.13 in
X-axis properties
- Ix X-axis moment of inertia
- 0.184 in⁴
- Zx X-axis plastic section modulus
- 0.305 in³
- Sx X-axis elastic section modulus
- 0.222 in³
- rx X-axis radius of gyration
- 0.543 in
Y- and z-axis properties
- Iy Y-axis moment of inertia
- 0.184 in⁴
- Zy Y-axis plastic section modulus
- 0.305 in³
- Sy Y-axis elastic section modulus
- 0.222 in³
- ry Y-axis radius of gyration
- 0.543 in
Torsion, warping & perimeters
- J Torsional constant
- 0.368 in⁴
Compare published reference values
HSS1.660X0.140 alongside nearby HSS records
No other record shares this exact nominal series; these are the nearest weights in the same family. Peers are ordered by absolute weight difference, then listed depth and designation. The table does not rank structural performance or approve a substitution.
| Record | Weight (lb/ft) | Outside diameter (in) | Area (in²) | Ix (in⁴) | Iy (in⁴) |
|---|---|---|---|---|---|
| HSS1.660X0.140 (this record) | 2.27 | 1.66 | 0.625 | 0.184 | 0.184 |
| HSS1.900X0.120 | 2.28 | 1.9 | 0.624 | 0.251 | 0.251 |
| HSS1.900X0.145 | 2.72 | 1.9 | 0.749 | 0.293 | 0.293 |
Relative to HSS1.660X0.140, HSS1.900X0.120 changes nominal weight by +0.01 lb/ft, listed outside diameter by +0.24 in, and area by -0.001 in². At the same hypothetical 20 ft length, the nominal weight difference is +0.2 lb.
Open these records in the full comparison tool
Compare the remaining dimensions, axis conventions, grade, availability and project requirements separately. Weight or section-property similarity does not establish matching connection geometry or member capacity.
Data is derived from the AISC Shapes Database v16.0, consistent with the AISC Steel Construction Manual, 16th Edition, 1st Printing. AISC advises professional verification before use in a specific application. The downloadable DXF is a nominal reference profile and may simplify rolled fillets, flange tapers, angle radii, HSS corner radii, and other manufacturing geometry. Verify all dimensions and suitability before design, detailing, ordering, or fabrication.
From reference to deliverable