H65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mm
H65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mm
H65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mm
H65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mm
H65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mm
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H65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mmH65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mmH65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mmH65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mmH65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mm

H65 Brass Round Tube — 1mm Wall, 300mm Length | OD 20.5mm–80mm

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Price:
$13.60 USD
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In stock (500 units), ready to be shipped

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Description

H65 Brass Round Tube — Precision Capillary Tubing with 1mm Wall & 300mm Length

When your project demands a tube that fits exactly — not approximately — a loose tolerance or inconsistent wall thickness can ruin a machined part, a decorative rail, or a fluid-transfer assembly. Hobbyists, model engineers, jewelers, HVAC technicians, and small-shop machinists all share the same frustration: finding brass tubing that is dimensionally consistent enough to trust. These H65 brass round tubes are drawn to tight tolerances so the OD, ID, and wall thickness you select are the dimensions you actually receive.

Each piece is a single hollow round tube in H65 brass (≈65% copper, 35% zinc), with a uniform 1mm wall thickness and a fixed length of 300mm (≈11.81"). Outer diameters are available from 20.5mm (≈0.807") up to 80mm (≈3.150"), with inner diameters running 2mm smaller than the OD across all variants (e.g., 25mm OD / 23mm ID, 50mm OD / 48mm ID). Select the exact OD/ID combination you need from the variant options above.

Typical use cases include DIY brass capillary tubing for model steam engines, decorative handrail inserts and furniture legs, precision brass sleeve bushings for hobby CNC builds, lightweight structural spacers in electronics enclosures, and fluid-transfer lines in low-pressure plumbing or pneumatic prototypes.

ℹ️ Compatibility Note: All variants share a 1mm wall thickness and 300mm (≈11.81") length. Inner diameter = Outer diameter − 2mm. Confirm your required OD and ID using calipers before ordering. These tubes are unthreaded plain round sections — verify fitting bore dimensions match your chosen variant.
⚠️ Sizing Tip: If you need a slip-fit over a rod or shaft, choose an ID that is typically 0.1–0.5mm larger than the rod diameter. Contact us to confirm if you need tighter tolerances or custom lengths.

✅ Key Features of These H65 Brass Round Tubes

  • 🔩H65 Brass Alloy Construction — Made from 65/35 copper-zinc brass, offering reliable corrosion resistance, good ductility, and easy machinability for DIY brass capillary tubing and precision metalwork projects.
  • 📏Wide OD Range in One Listing — Choose from 26 outer diameter options spanning 20.5mm to 80mm (≈0.807" to ≈3.150"), covering a broad range of hobby, craft, and light industrial applications without sourcing from multiple suppliers.
  • ⚙️Consistent 1mm Wall Thickness — Uniform wall across all variants ensures predictable strength, weight, and fit — critical for precision brass sleeve bushings, spacers, and structural inserts where wall variation causes assembly problems.
  • ✂️Easy to Cut, Solder & Machine — H65 brass cuts cleanly with a pipe cutter or fine-tooth saw, solders readily with standard rosin-core or silver solder, and machines without special tooling — ideal for model engineers and small-shop fabricators.
  • 📐Fixed 300mm Length for Consistent Stock — Each tube is 300mm (≈11.81") long, giving you a workable blank that can be cut to shorter lengths as needed, reducing waste compared to buying pre-cut pieces for hollow round brass pipe projects.
  • 🏠Versatile Indoor & Light Outdoor Use — Brass naturally resists tarnish in typical indoor environments and performs well in mildly humid conditions, making these tubes suitable for decorative furniture hardware, handrail inserts, and light-duty outdoor fixtures with a protective finish.

📐 Technical Specifications — H65 Brass Round Tube

Material H65 Brass (≈65% Copper, 35% Zinc)
Tube Shape Hollow Round (Circular Cross-Section)
Wall Thickness 1mm (all variants)
Length 300mm (≈11.81" / ≈11-13/16")
Outer Diameter (OD) Range 20.5mm–80mm (≈0.807"–≈3.150") — see variant options
Inner Diameter (ID) OD minus 2mm (e.g., 25mm OD → 23mm ID; 50mm OD → 48mm ID)
Surface Finish Drawn / mill finish (natural brass color)
Thread / End Treatment Plain, unthreaded ends
Quantity per Order 1 piece per variant selected
Country of Origin China
Typical Tensile Strength Generally 340–470 MPa (varies by temper; contact us to confirm)
Machinability Good — suitable for cutting, drilling, soldering, and light turning
Recommended Applications Model engineering, decorative hardware, sleeve bushings, fluid-transfer prototypes, DIY fabrication

❓ Frequently Asked Questions

How do I choose the right outer diameter for my project?

Measure the opening or shaft your tube needs to fit around or inside. For a slip-fit over a rod, choose an inner diameter (ID) that is typically 0.1–0.5mm larger than the rod. For example, if your rod is 20mm, the 21mm OD / 19mm ID variant generally provides a snug clearance fit. Always verify with calipers before cutting. Remember: ID = OD − 2mm for all variants in this listing.

What load or pressure can these brass tubes handle?

H65 brass generally offers a tensile strength of around 340–470 MPa depending on temper and processing. For structural or pressure-bearing applications, consult a qualified engineer. These tubes are typically used in light-duty mechanical, decorative, and fluid-transfer prototyping rather than high-pressure systems. Contact us to confirm if you have specific load requirements.

Are these tubes suitable for outdoor or humid environments?

Brass has inherent corrosion resistance and performs well in mildly humid or sheltered outdoor environments. For prolonged outdoor exposure or coastal/salt-air conditions, a clear lacquer or protective coating is generally recommended to prevent tarnishing. Brass is not recommended for direct contact with ammonia-based environments, which can cause stress corrosion cracking.

What fittings or connectors are compatible with these tubes?

These are plain (unthreaded) round tubes. They are compatible with standard compression fittings, push-fit connectors, or custom-machined end fittings sized to match the OD of your chosen variant. In most cases, you will need to confirm the fitting's bore or collar diameter against the listed OD before ordering. For threaded connections, the tube ends can be tapped or fitted with threaded inserts by a machinist.

Can I cut, solder, or machine these tubes at home?

Yes. H65 brass machines, cuts, and solders readily with common workshop tools. A pipe cutter or fine-tooth hacksaw works well for clean cuts. Brass solders easily with standard rosin-core or silver solder and a propane torch. Deburr cut ends with a reamer or fine file before assembly. For lathe work, standard HSS or carbide tooling handles H65 brass without difficulty.

How do I convert the millimeter sizes to inches?

Divide the mm value by 25.4 to get inches. Quick reference for common sizes in this listing:

  • 20.5mm OD ≈ 0.807"
  • 25mm OD ≈ 0.984" (≈1")
  • 30mm OD ≈ 1.181" (≈1-3/16")
  • 40mm OD ≈ 1.575" (≈1-9/16")
  • 50mm OD ≈ 1.969" (≈2")
  • 60mm OD ≈ 2.362" (≈2-3/8")
  • 80mm OD ≈ 3.150" (≈3-1/8")
  • 300mm Length ≈ 11.81" (≈11-13/16")
What is the difference between H65 brass and other common brass grades?

H65 brass contains approximately 65% copper and 35% zinc — one of the most widely used cartridge-brass grades for drawn tubing. Compared to H62 (62% Cu), H65 generally offers slightly better ductility and corrosion resistance, making it well-suited for drawn capillary tubing, decorative applications, and light fluid-handling. Compared to C360 free-machining brass (common in the US), H65 is a close equivalent in machinability and corrosion performance.

🛒 Select your outer diameter above, then add to cart — ships from our US warehouse.

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