{"product_id":"brass-round-tube-03mm-wall-od-1-12mm-300mm-hollow-tubing","title":"Brass Round Tube 0.3mm Wall Thickness OD 1–12mm × 300mm Hollow Tubing","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right OD and length for my project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the hole or bore your tube needs to fit into, then select an OD slightly smaller than that opening. For reference, 1mm ≈ 0.039\\\" and 12mm ≈ 0.472\\\". The fixed length is 300mm (≈11.8\\\"). If you need a shorter piece, these tubes are easy to cut with a fine-tooth saw or tube cutter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the wall thickness, and does it affect strength?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"All variants in this listing have a uniform 0.3mm wall thickness. This thin wall is designed for lightweight precision applications such as model making, jewelry, and instrumentation. For structural or load-bearing uses, a thicker-walled brass tube is generally recommended.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these brass tubes be used outdoors or in humid environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass has naturally good corrosion resistance compared to plain steel, making it suitable for moderately humid or indoor-outdoor environments. However, in highly corrosive or saltwater conditions, brass may develop patina over time. A clear lacquer coating is generally recommended for long-term outdoor exposure.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What thread or fitting standards are compatible with these tubes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These are unthreaded hollow round tubes intended as raw stock material. They are not pre-threaded. Compatibility with fittings depends on the OD you select and the fitting's bore size. For telescoping applications, choose an inner tube OD that fits snugly inside the next size up's ID.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I cut, solder, or bend these tubes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Brass is generally easy to cut with a fine-tooth hobby saw or rotary tube cutter, and it solders well with standard silver solder or soft solder. Bending is possible on larger ODs using a tube bender; for very small diameters (under 3mm), filling the tube with sand or using a mandrel is typically recommended to prevent kinking.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these tubes suitable for model railroads, RC aircraft, or jewelry making?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The OD range of 1–12mm and the thin 0.3mm wall make these tubes well-suited for scale model construction, RC aircraft frames, jewelry findings, and fine craft projects where low weight and precise dimensions are important.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between OD and ID, and how do I read the variant options?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"OD (Outer Diameter) is the measurement across the outside of the tube; ID (Inner Diameter) is the measurement of the hollow bore inside. Each variant is listed as OD × ID — for example, '4mm × 3.4mm' means the tube is 4mm wide on the outside and has a 3.4mm bore, with a 0.3mm wall on each side.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eBrass Round Tube 0.3mm Wall — Precision Hollow Tubing for Model Making, Jewelry \u0026amp; DIY Crafts\u003c\/h2\u003e\n    \u003cp\u003eWhen your project demands exact dimensions and a clean metallic finish, finding the right small-diameter brass round tube can be surprisingly difficult. Whether you're a model railroader searching for scale structural stock, a jeweler needing a precise hollow finding, or an RC hobbyist building lightweight frames, off-the-shelf tubing rarely comes in the exact OD you need. These brass hollow round tubes are stocked in 20 incremental sizes specifically to solve that problem.\u003c\/p\u003e\n    \u003cp\u003eEach tube is made from brass alloy with a consistent 0.3mm wall thickness throughout. The outer diameter ranges from 1mm (≈0.039\") to 12mm (≈0.472\"), with corresponding inner diameters from 0.4mm to 11.4mm. Every piece is cut to a fixed length of 300mm (≈11.8\"). Select your exact OD × ID combination from the variant options above.\u003c\/p\u003e\n    \u003cp\u003eTypical applications include scale model construction and model railroad detailing, brass tube jewelry findings and hollow bead cores, RC aircraft and drone frame components, scientific instrument housings, and telescoping brass tube assemblies for precision DIY hardware projects.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003eℹ️\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e These are unthreaded raw brass tube stock. OD range: 1–12mm. Wall thickness: 0.3mm (fixed). Length: 300mm per piece. Verify your required OD and ID before ordering — see variant selector above.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These Brass Hollow Round Tubes\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e20 Incremental OD Sizes\u003c\/strong\u003e — Available from 1mm to 12mm OD in closely spaced steps, making it straightforward to find the exact diameter for telescoping fits, model scale work, or jewelry applications.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eUniform 0.3mm Wall Thickness\u003c\/strong\u003e — Consistent thin-wall construction across all sizes ensures predictable weight, bore clearance, and machinability — critical for precision small-diameter brass tubing projects.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✂️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eEasy to Cut, Solder \u0026amp; Shape\u003c\/strong\u003e — Brass machines cleanly with standard hobby tools, accepts soft solder and silver solder readily, and can be bent on small-radius mandrels for curved assemblies in RC and model craft builds.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eNatural Corrosion Resistance\u003c\/strong\u003e — Brass alloy resists oxidation better than plain steel, making these hollow brass tubes suitable for indoor-outdoor craft projects, decorative hardware, and humid workshop environments.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eLightweight for Precision Applications\u003c\/strong\u003e — The thin 0.3mm wall keeps each tube light without sacrificing dimensional accuracy, an important factor for model airplane frames, jewelry findings, and instrumentation housings.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e300mm Fixed Length per Piece\u003c\/strong\u003e — At 300mm (≈11.8\") each, these tubes provide enough stock to cut multiple shorter sections for model railroad detailing, scale structural elements, or multi-piece jewelry components from a single piece.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Brass Hollow Round Tube\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTube Form\u003c\/th\u003e\n\u003ctd\u003eRound hollow tube (seamless appearance)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWall Thickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (fixed across all variants)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD) Range\u003c\/th\u003e\n\u003ctd\u003e1mm (≈0.039\") – 12mm (≈0.472\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInner Diameter (ID) Range\u003c\/th\u003e\n\u003ctd\u003e0.4mm – 11.4mm (OD minus 0.6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e300mm (≈11.8\") per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable OD × ID Sizes\u003c\/th\u003e\n\u003ctd\u003e1×0.4, 1.2×0.6, 1.5×0.9, 1.6×1, 1.8×1.2, 2×1.4, 2.5×1.9, 3×2.4, 3.5×2.9, 4×3.4, 4.5×3.9, 5×4.4, 5.5×4.9, 6×5.4, 7×6.4, 8×7.4, 9×8.4, 10×9.4, 11×10.4, 12×11.4 (all in mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread \/ Fitting\u003c\/th\u003e\n\u003ctd\u003eUnthreaded raw stock — Contact us to confirm fitment\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece per variant selected\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCountry of Manufacture\u003c\/th\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eHeads up:\u003c\/strong\u003e Due to the very small diameters (especially 1–2mm OD), please double-check your required bore size before ordering. If you need a custom length or bulk quantity, contact us before purchasing.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right OD and length for my project?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the hole or bore your tube needs to fit into, then select an OD slightly smaller than that opening. For reference, 1mm ≈ 0.039\" and 12mm ≈ 0.472\". The fixed length is 300mm (≈11.8\"). If you need a shorter piece, these tubes are easy to cut with a fine-tooth saw or tube cutter — one 300mm piece typically yields multiple shorter sections.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the wall thickness, and does it affect strength?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eAll variants in this listing have a uniform 0.3mm wall thickness. This thin wall is designed for lightweight precision applications such as model making, jewelry, and instrumentation. For structural or load-bearing uses, a thicker-walled brass tube is generally recommended. The 0.3mm wall is typically sufficient for decorative, scale, and light-duty craft applications.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these brass tubes be used outdoors or in humid environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eBrass has naturally good corrosion resistance compared to plain steel, making it suitable for moderately humid or indoor-outdoor environments. In highly corrosive or saltwater conditions, brass may develop a patina over time. A clear lacquer coating is generally recommended for long-term outdoor exposure to maintain the original finish.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat thread or fitting standards are compatible with these tubes?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThese are unthreaded hollow round tubes intended as raw stock material. Compatibility with fittings depends on the OD you select and the fitting's bore size. For telescoping assemblies, choose an inner tube whose OD fits snugly inside the next size up's ID — for example, a 3mm OD tube (ID 2.4mm) will accept a 2mm OD tube inside it with a small clearance gap. Contact us to confirm fitment for specific applications.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I cut, solder, or bend these tubes?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. Brass is generally easy to cut with a fine-tooth hobby saw or rotary tube cutter, and it solders well with standard silver solder or soft solder. Bending is possible on larger ODs using a tube bender; for very small diameters (under 3mm OD), filling the tube with sand or using a mandrel is typically recommended to prevent kinking during the bend.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these tubes suitable for model railroads, RC aircraft, or jewelry making?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. The OD range of 1–12mm and the thin 0.3mm wall make these tubes well-suited for scale model construction, RC aircraft frames, jewelry findings, and fine craft projects where low weight and precise dimensions are important. They are commonly used in HO and N scale model railroad detailing, small drone frame spars, and hollow bead or tube findings in metalwork jewelry.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between OD and ID, and how do I read the variant options?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eOD (Outer Diameter) is the measurement across the outside of the tube; ID (Inner Diameter) is the measurement of the hollow bore inside. Each variant is listed as OD × ID — for example, \"4mm × 3.4mm\" means the tube is 4mm wide on the outside and has a 3.4mm bore, with a 0.3mm wall on each side. Always use the OD when checking fit against an external bore, and the ID when checking what can pass through the tube.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your size (OD × ID) above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"1mm x 0.4mm \/ 0.3mm \/ 300mm","offer_id":52332692242706,"sku":"AdaahDZ34020x1","price":4.03,"currency_code":"USD","in_stock":true},{"title":"1.2mm x 0.6mm \/ 0.3mm \/ 300mm","offer_id":52332692275474,"sku":"AdaahDZ34023x1","price":4.03,"currency_code":"USD","in_stock":true},{"title":"1.5mm x 0.9mm \/ 0.3mm \/ 300mm","offer_id":52332692308242,"sku":"AdaahDZ34029x1","price":4.03,"currency_code":"USD","in_stock":true},{"title":"1.6mm x 1mm \/ 0.3mm \/ 300mm","offer_id":52332692341010,"sku":"AdaahDZ34033x1","price":4.03,"currency_code":"USD","in_stock":true},{"title":"1.8mm x 1.2mm \/ 0.3mm \/ 300mm","offer_id":52332692373778,"sku":"AdaahDZ34036x1","price":4.03,"currency_code":"USD","in_stock":true},{"title":"2mm x 1.4mm \/ 0.3mm \/ 300mm","offer_id":52332692406546,"sku":"AdaahDZ34041x1","price":3.74,"currency_code":"USD","in_stock":true},{"title":"2.5mm x 1.9mm \/ 0.3mm \/ 300mm","offer_id":52332692439314,"sku":"AdaahDZ34048x1","price":4.03,"currency_code":"USD","in_stock":true},{"title":"3mm x 2.4mm \/ 0.3mm \/ 300mm","offer_id":52332692472082,"sku":"AdaahDZ34053x1","price":3.74,"currency_code":"USD","in_stock":true},{"title":"3.5mm x 2.9mm \/ 0.3mm \/ 300mm","offer_id":52332692504850,"sku":"AdaahDZ34061x1","price":4.16,"currency_code":"USD","in_stock":true},{"title":"4mm x 3.4mm \/ 0.3mm \/ 300mm","offer_id":52332692537618,"sku":"AdaahDZ34067x1","price":4.64,"currency_code":"USD","in_stock":true},{"title":"4.5mm x 3.9mm \/ 0.3mm \/ 300mm","offer_id":52332692570386,"sku":"AdaahDZ34074x1","price":4.5,"currency_code":"USD","in_stock":true},{"title":"5mm x 4.4mm \/ 0.3mm \/ 300mm","offer_id":52332692603154,"sku":"AdaahDZ34079x1","price":4.64,"currency_code":"USD","in_stock":true},{"title":"5.5mm x 4.9mm \/ 0.3mm \/ 300mm","offer_id":52332692635922,"sku":"AdaahDZ34087x1","price":5.07,"currency_code":"USD","in_stock":true},{"title":"6mm x 5.4mm \/ 0.3mm \/ 300mm","offer_id":52332692668690,"sku":"AdaahDZ34092x1","price":5.21,"currency_code":"USD","in_stock":true},{"title":"7mm x 6.4mm \/ 0.3mm \/ 300mm","offer_id":52332692701458,"sku":"AdaahDZ34105x1","price":5.83,"currency_code":"USD","in_stock":true},{"title":"8mm x 7.4mm \/ 0.3mm \/ 300mm","offer_id":52332692734226,"sku":"AdaahDZ34115x1","price":6.84,"currency_code":"USD","in_stock":true},{"title":"9mm x 8.4mm \/ 0.3mm \/ 300mm","offer_id":52332692766994,"sku":"AdaahDZ34127x1","price":7.48,"currency_code":"USD","in_stock":true},{"title":"10mm x 9.4mm \/ 0.3mm \/ 300mm","offer_id":52332692799762,"sku":"AdaahDZ34139x1","price":7.48,"currency_code":"USD","in_stock":true},{"title":"11mm x 10.4mm \/ 0.3mm \/ 300mm","offer_id":52332692832530,"sku":"AdaahDZ34152x1","price":8.61,"currency_code":"USD","in_stock":true},{"title":"12mm x 11.4mm \/ 0.3mm \/ 300mm","offer_id":52332692865298,"sku":"AdaahDZ34160x1","price":8.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture11of11_4a6e2904-40b2-4972-a5fa-93ca10fd3e12.jpg?v=1781099074","url":"https:\/\/homediyer.com\/products\/brass-round-tube-03mm-wall-od-1-12mm-300mm-hollow-tubing","provider":"HomeDIYer","version":"1.0","type":"link"}