Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length
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Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm LengthBrass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length

Brass Round Tube — OD 4–9.5mm, Wall 0.2–2mm, 300mm Length

HomeDIYer
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By HomeDIYer®

Price:
$3.74 USD
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In stock (500 units), ready to be shipped

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Description

Brass Round Tube — Precision Hollow Tubing for DIY, Model Making & Fabrication

Whether you're building a scale model, fabricating a custom bracket, or need a reliable spacer for a mechanical assembly, finding brass hollow round tube in the exact OD and wall thickness you need shouldn't be a scavenger hunt. This listing covers a wide selection of metric brass round tubes — OD 4mm through 9.5mm — so hobbyists, makers, and tradespeople can get the right fit without compromise.

Each tube is made from brass alloy with a smooth, drawn finish. Outer diameters range from 4mm (≈5/32") to 9.5mm (≈3/8"), with inner diameters and wall thicknesses varying by variant — wall options span 0.2mm to 2mm. All tubes are cut to a fixed length of 300mm (≈11.8"). Select your exact OD × ID combination and wall thickness from the variant dropdowns above.

Typical applications include brass tube spacers for electronics and PCB standoffs, structural elements in RC aircraft and drone frames, decorative inlays for woodworking and furniture, and small-bore fluid or pneumatic lines in low-pressure DIY systems. The consistent metric sizing makes these tubes a natural fit for metric brass tube fittings and compression couplings.

🔵 Compatibility Note: All dimensions are metric (mm). OD values correspond to standard metric tube sizing. Always verify OD, ID, and wall thickness against your fitting or assembly spec before ordering. Thread or press-fit compatibility depends on your specific application.

✅ Key Features of These Brass Round Hollow Tubes

  • 📐Wide Size Range — OD from 4mm (≈5/32") to 9.5mm (≈3/8") with wall thickness options from 0.2mm to 2mm, covering thin-wall decorative tubing through heavier structural brass tube stock.
  • 🔩Consistent Metric Dimensions — Drawn to standard metric sizing for reliable compatibility with metric brass fittings, couplings, and machined components — no guesswork on fit.
  • ⚙️Machinable & Solderable — Brass cuts cleanly with a pipe cutter or hacksaw and solders easily with standard silver or lead-free solder, making it ideal for custom fabrication and repair work.
  • 🌿Natural Corrosion Resistance — Brass resists oxidation and performs well in humid or mildly corrosive environments, making it a durable choice for both indoor and sheltered outdoor applications.
  • 📏Fixed 300mm Length — Each tube is 300mm (≈11.8") long — a practical working length for most hobby, model-making, and light fabrication tasks without excess waste.
  • 🎨Smooth Drawn Finish — The exterior surface is smooth and consistent, suitable for visible decorative applications such as furniture inlays, lamp components, and architectural model details.

📐 Technical Specifications — Brass Hollow Round Tube

Material Brass (copper-zinc alloy)
Tube Form Hollow round (seamless drawn)
Outer Diameter (OD) 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm
Wall Thickness 0.2mm, 0.25mm, 0.3mm, 0.4mm, 0.5mm, 0.75mm, 1mm, 1.5mm, 2mm (see variant options)
Inner Diameter (ID) See variant options (OD minus 2× wall thickness)
Length 300mm (≈11.8")
Surface Finish Smooth drawn, natural brass
Alloy Grade Contact us to confirm
Quantity per Order 1 piece per variant selected
Country of Manufacture China
⚠️ Sizing Tip: Inner diameter = OD − (2 × wall thickness). For example, a 6mm OD tube with 0.5mm wall has an ID of 5mm. Confirm your required clearance or interference fit before ordering.

❓ Frequently Asked Questions

How do I choose the right OD and wall thickness for my project?

Start with the outer diameter (OD) that fits your application — for example, if you need a tube to slide over a 4mm rod, choose an ID slightly larger than 4mm. Wall thickness determines strength: thinner walls (0.2–0.3mm) are typically used for lightweight decorative or model work, while thicker walls (1–2mm) are generally better for structural or load-bearing applications.

All sizes are listed in mm. To convert to inches, divide by 25.4 — for example, 6mm OD ≈ 0.236" (just under 1/4").

What is the tensile strength or load capacity of these brass tubes?

Brass alloy (typically C260 or similar) generally has a tensile strength of around 300–500 MPa depending on temper and alloy composition. Thicker-walled variants will carry more compressive and bending load. For precise structural calculations, please contact us to confirm the alloy grade before ordering.

Can these brass tubes be used outdoors or in humid environments?

Brass is naturally corrosion-resistant and generally performs well in moderately humid or outdoor environments. Over time it will develop a natural patina (darkening/greening). For marine or highly corrosive environments, applying a clear lacquer or sealant is typically recommended to preserve appearance and slow oxidation.

Are these tubes compatible with standard metric fittings and couplings?

Yes — all dimensions are metric (mm) and correspond to standard metric tube sizing. They are generally compatible with metric compression fittings, push-fit couplings, and machined connectors. Always verify the exact OD and ID against your fitting's bore specification before ordering, as tolerances vary by manufacturer.

Can I cut, drill, or solder these brass tubes?

Yes. Brass machines and solders very well. These tubes can typically be cut with a pipe cutter, fine-tooth hacksaw, or rotary tool. They can be drilled with standard HSS bits and joined using silver solder or lead-free solder. Light deburring after cutting is recommended for clean, safe edges and accurate fits.

Which wall thickness is right for model making vs. structural use?

For scale model making, RC aircraft frames, or decorative inlays, wall thicknesses of 0.2–0.5mm are generally sufficient and keep weight low. For structural brackets, furniture components, or mechanical assemblies where rigidity matters, 0.75mm–2mm walls are typically recommended. When in doubt, go one step thicker — it's easier to remove material than add it.

What is the length of each tube, and are custom lengths available?

Each tube in this listing is 300mm (≈11.8") long. Custom lengths are not available through this listing. If you need a different length, please contact us before placing your order and we'll advise on availability.

🛒 Select your size (OD × ID) and wall thickness above, then add to cart — ships from our US warehouse.

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