{"product_id":"stainless-steel-square-tube-connector-rustproof-flange-base-20-40mm-1","title":"Stainless Steel Square Tube Connector – Rustproof Flange Base","description":"\n\u003ch2\u003eHeavy-Duty Stainless Steel Square Tube Connector \u0026amp; Flange Base\u003c\/h2\u003e\n\u003cp\u003eBuild stronger, cleaner structures with this premium \u003cstrong\u003estainless steel square tube connector\u003c\/strong\u003e. Engineered for metalworking, DIY fabrication, and cabinet construction, this versatile flange base and elbow corner joint delivers a secure, rustproof connection every time. Whether you're assembling furniture frames, shelving units, handrails, or custom cabinet structures, this connector set offers the rigidity and finish your project demands.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-grade stainless steel — rustproof, corrosion-resistant, and built for long-term durability indoors or outdoors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Tube Sizes:\u003c\/strong\u003e Fits 20mm (0.79\"), 25mm (0.98\"), 30mm (1.18\"), and 40mm (1.57\") square tubes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Thick-walled design handles substantial structural loads without flexing or deforming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Application:\u003c\/strong\u003e Ideal for elbow corner joints, flange base mounts, cabinet frames, workbenches, display racks, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Comes with mounting screws included — no extra hardware needed to get started\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean Finish:\u003c\/strong\u003e Smooth brushed surface gives any project a professional, polished look\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Square Post \/ Tube Connector Flange Base\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Tube Sizes:\u003c\/strong\u003e 20 \/ 25 \/ 30 \/ 40 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 pc (with screws)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Square Tube Connector \/ Flange Base\u003c\/li\u003e\n  \u003cli\u003eMounting screws included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePlease Note\u003c\/h3\u003e\n\u003cp\u003eDue to variations in camera equipment, lighting conditions, and display settings, the item's color may appear slightly different from images shown. Please allow a manual measurement tolerance of 1–2 cm (0.39–0.79 in).\u003c\/p\u003e\n\n\u003ch3\u003eComplete Your Workshop\u003c\/h3\u003e\n\u003cp\u003eLooking for more precision tools and storage solutions for your DIY projects? Check out our \u003ca href=\"\/products\/leather-hole-punch-tool-diy-stitching-punch-4-5-6mm\"\u003eLeather Hole Punch Tool | DIY Stitching Punch 4\/5\/6mm\u003c\/a\u003e and keep your project supplies neatly organized with our \u003ca href=\"\/products\/airtight-transparent-pet-storage-bottle-craft-beads-home-organization\"\u003eAirtight Transparent PET Storage Bottle | Beads \u0026amp; Crafts\u003c\/a\u003e. For safe and tidy storage of small hardware, explore our \u003ca href=\"\/products\/vintage-baroque-embossed-metal-decorative-tray-jewelry-organizer\"\u003eVintage Baroque Embossed Metal Tray – Jewelry \u0026amp; Decor Organizer\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What square tube sizes does this stainless steel flange base connector fit?\u003c\/h4\u003e\n\u003cp\u003eA: This connector is compatible with four square tube sizes: 20mm (0.79\"), 25mm (0.98\"), 30mm (1.18\"), and 40mm (1.57\"). Be sure to select the size that matches your square tube when ordering.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this square tube connector suitable for outdoor use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The connector is made from high-grade stainless steel, which is naturally rustproof and corrosion-resistant, making it well-suited for both indoor and outdoor structural applications such as railings, garden frames, and outdoor shelving.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this connector come with the screws needed for installation?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, each connector includes mounting screws in the package, so you can begin installation right away without purchasing additional hardware.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this flange base connector be used for cabinet construction?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The square tube flange base connector is ideal for cabinet frames, furniture structures, workbenches, and display racks. Its heavy-duty construction ensures a firm, stable joint for load-bearing applications.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What square tube sizes does this stainless steel flange base connector fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This connector is compatible with four square tube sizes: 20mm (0.79\\\"), 25mm (0.98\\\"), 30mm (1.18\\\"), and 40mm (1.57\\\"). Be sure to select the size that matches your square tube when ordering.\"}}, {\"@type\": \"Question\", \"name\": \"Is this square tube connector suitable for outdoor use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The connector is made from high-grade stainless steel, which is naturally rustproof and corrosion-resistant, making it well-suited for both indoor and outdoor structural applications such as railings, garden frames, and outdoor shelving.\"}}, {\"@type\": \"Question\", \"name\": \"Does this connector come with the screws needed for installation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, each connector includes mounting screws in the package, so you can begin installation right away without purchasing additional hardware.\"}}, {\"@type\": \"Question\", \"name\": \"Can this flange base connector be used for cabinet construction?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. The square tube flange base connector is ideal for cabinet frames, furniture structures, workbenches, and display racks. Its heavy-duty construction ensures a firm, stable joint for load-bearing applications.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Stainless Steel Square Tube Connector – Rustproof Flange Base\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/products\/stainless-steel-square-tube-connector-rustproof-flange-base-20-40mm\"}]}\u003c\/script\u003e","brand":"NIFTY","offers":[{"title":"1 \/ 20mm","offer_id":67875304440032,"sku":"14:175#1;5:201336300#20mm","price":11.65,"currency_code":"USD","in_stock":true},{"title":"4 \/ 20mm","offer_id":67875304472800,"sku":"14:100016652#4;5:201336300#40mm","price":20.15,"currency_code":"USD","in_stock":true},{"title":"2 \/ 20mm","offer_id":67875304505568,"sku":"14:347#2;5:201336300#25mm","price":11.9,"currency_code":"USD","in_stock":true},{"title":"3 \/ 20mm","offer_id":67875304538336,"sku":"14:1254#3;5:201336300#30mm","price":15.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/5384\/6496\/files\/Sbedf26c0036a4a66aa323567c492ff6cU.webp?v=1791741210","url":"https:\/\/niftyshopmart.com\/products\/stainless-steel-square-tube-connector-rustproof-flange-base-20-40mm-1","provider":"NIFTY","version":"1.0","type":"link"}