{"product_id":"m12-round-bend-u-bolt-a2-stainless-steel","title":"M12 Round Bend U-Bolt – A2 Stainless Steel, 42mm to 328mm","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 U-bolt length for my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the outer diameter of the pipe or tube you need to clamp, then add roughly twice the thread engagement length you need. For example, a 42mm (≈1-5\/8\\u201d) leg length is typically suited for smaller-diameter pipes, while 328mm (≈12-15\/16\\u201d) legs accommodate larger spans. When in doubt, size up — you can always use a nut to adjust clamping depth.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does A2 stainless steel mean, and how strong is it?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A2 stainless steel (also known as 304 stainless) is an austenitic grade with a tensile strength of typically 500–700 MPa. It offers solid mechanical strength for most structural and pipe-clamping applications and is significantly more corrosion-resistant than plain carbon steel or zinc-plated hardware.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these U-bolts be used outdoors or in marine environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A2 stainless steel provides good corrosion resistance for outdoor, coastal, and mildly marine environments. For fully submerged saltwater or highly aggressive chemical exposure, A4 (316) stainless is generally recommended. Contact us to confirm suitability for your specific environment.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What thread standard do these U-bolts use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These U-bolts use M12 metric coarse thread (pitch typically 1.75mm per ISO 261\/262). They are compatible with standard M12 hex nuts and washers. They are not compatible with 1\/2\\u201d UNC\/UNF imperial threads.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What pipe or tube diameter does an M12 U-bolt fit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The inside width of the U-bolt bend determines the pipe OD it fits. The inside bend diameter varies by length variant — please refer to the variant options or contact us to confirm the inside width for your chosen length before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do the nuts and washers come included?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each U-bolt is sold as a single fastener unit. Matching M12 hex nuts and flat washers are generally available separately. Check the variant listing or contact us to confirm what is included with your order.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the round bend design better than a square bend for my project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Round bend U-bolts distribute clamping load evenly around cylindrical surfaces such as pipes, tubes, and round bars, making them the preferred choice for pipe clamps, exhaust hangers, and suspension components. Square bend U-bolts are typically used for flat or rectangular cross-sections like leaf springs or square tubing.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003c!-- ① OVERVIEW --\u003e\n  \u003ch2\u003eM12 Round Bend U-Bolt in A2 Stainless Steel — Secure Any Pipe or Tube Without Rust Worries\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003cp\u003eWhether you're mounting exhaust pipes under a vehicle, securing conduit runs in a workshop, or anchoring round tubing on a marine structure, a corroded or undersized fastener can turn a straightforward job into a frustrating callback. These M12 round bend U-bolts in A2 stainless steel give contractors, fabricators, and serious DIYers a fastener that holds its finish and its grip — even in damp or outdoor conditions.\u003c\/p\u003e\n    \u003cp\u003eEach U-bolt is machined from A2 (304) stainless steel with a fully threaded M12 shank on both legs. Leg lengths range from 42mm (≈1-5\/8\") to 328mm (≈12-15\/16\"), covering a wide span of pipe and tube diameters. Available in packs of 1, 2, or 3 pieces so you can order exactly what your project requires without overstocking.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include pipe and conduit clamping in plumbing and electrical installations, exhaust hanger and chassis mounting in automotive fabrication, and structural tube securing in marine, agricultural, and outdoor equipment builds — all applications where a metric M12 stainless U-bolt with a round bend profile is the correct fastener choice.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ② COMPATIBILITY BAR --\u003e\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔩\u003c\/span\u003e\n    \u003cstrong\u003eThread Compatibility:\u003c\/strong\u003e M12 metric coarse thread (ISO 261\/262, pitch typically 1.75mm). Fits standard M12 hex nuts and washers. \u003cem\u003eNot compatible with 1\/2\" UNC\/UNF imperial threads.\u003c\/em\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ③ KEY FEATURES --\u003e\n  \u003ch2\u003e✅ Key Features of These M12 Stainless Steel Round Bend U-Bolts\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e🦀\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eA2 Stainless Steel Construction\u003c\/strong\u003e — Manufactured from A2 (304) stainless steel for reliable corrosion resistance in outdoor, coastal, and high-humidity environments where carbon steel fasteners would rust and seize.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003e12 Leg-Length Options\u003c\/strong\u003e — Available from 42mm (≈1-5\/8\") to 328mm (≈12-15\/16\"), making it straightforward to match the U-bolt to your specific pipe OD or clamping span without cutting or shimming.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e⭕\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eRound Bend Profile\u003c\/strong\u003e — The curved saddle distributes clamping force evenly around cylindrical pipes and tubes, reducing stress concentration and protecting the pipe surface compared to square-bend designs.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eFully Threaded M12 Shanks\u003c\/strong\u003e — Both legs carry full M12 metric thread along their usable length, giving you flexible nut positioning to fine-tune clamping depth and accommodate varying plate or bracket thicknesses.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Order 1, 2, or 3 pieces per SKU so you can match your exact job quantity — useful for single repairs, paired installations, or small batch fabrication work.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e🚢\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eShips from US Warehouse\u003c\/strong\u003e — Stocked domestically for faster delivery to job sites across the continental US, reducing lead time compared to overseas-sourced metric hardware.\u003c\/span\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n  \u003ch2\u003e📐 Technical Specifications — M12 Round Bend U-Bolt\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Size\u003c\/th\u003e\n\u003ctd\u003eM12 (12mm nominal diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eMetric coarse, ISO 261\/262 (pitch typically 1.75mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBend Style\u003c\/th\u003e\n\u003ctd\u003eRound bend (semi-circular saddle)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eA2 Stainless Steel (AISI 304 equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eMill \/ brushed stainless (no coating)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLeg Length Options\u003c\/th\u003e\n\u003ctd\u003e42mm (≈1-5\/8\"), 48mm (≈1-7\/8\"), 51mm (≈2\"), 60mm (≈2-3\/8\"), 76mm (≈3\"), 90mm (≈3-9\/16\"), 114mm (≈4-1\/2\"), 135mm (≈5-5\/16\"), 161mm (≈6-5\/16\"), 220mm (≈8-11\/16\"), 275mm (≈10-13\/16\"), 328mm (≈12-15\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInside Bend Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options \/ Contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e1, 2, or 3 pieces (select above)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNuts \/ Washers Included\u003c\/th\u003e\n\u003ctd\u003eSee variant options \/ Contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTensile Strength\u003c\/th\u003e\n\u003ctd\u003eTypically 500–700 MPa (A2-70 grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eGenerally suitable from -196°C to +300°C (contact us for high-heat applications)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\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\u003eSizing Note:\u003c\/strong\u003e Inside bend width (the pipe OD the U-bolt wraps around) varies by leg-length variant and is not the same as the leg length. Please contact us or refer to the variant detail to confirm the inside width before ordering.\n  \u003c\/div\u003e\n\n  \u003c!-- ⑤ FAQ --\u003e\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 U-bolt length for my application?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the outer diameter of the pipe or tube you need to clamp, then add roughly twice the thread engagement length you need for your mounting plate or bracket. For example, a 42mm (≈1-5\/8\") leg is typically suited for smaller-diameter pipes, while a 328mm (≈12-15\/16\") leg accommodates larger spans or thicker mounting assemblies. When in doubt, size up — you can always adjust clamping depth with the nut position.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat does A2 stainless steel mean, and how strong is it?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eA2 stainless steel is the ISO designation for AISI 304 stainless — an austenitic grade with a tensile strength of typically 500–700 MPa (A2-70 property class). It offers solid mechanical strength for most structural and pipe-clamping applications and is significantly more corrosion-resistant than plain carbon steel or zinc-plated hardware in outdoor and damp environments.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these U-bolts be used outdoors or in marine environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eA2 stainless steel provides good corrosion resistance for outdoor, coastal, and mildly marine environments — generally suitable for above-waterline marine hardware, outdoor pipe supports, and agricultural equipment. For fully submerged saltwater service or highly aggressive chemical exposure, A4 (316) stainless is generally recommended. Contact us to confirm suitability for your specific environment.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat thread standard do these U-bolts use, and are they compatible with my nuts?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThese U-bolts use M12 metric coarse thread per ISO 261\/262 (pitch typically 1.75mm). They are compatible with standard M12 hex nuts, flange nuts, and flat washers. They are \u003cstrong\u003enot\u003c\/strong\u003e compatible with 1\/2\" UNC or UNF imperial threads — the thread pitch and diameter are different even though the nominal sizes are close.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat pipe or tube outer diameter does this U-bolt fit?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe inside bend width of the U-bolt saddle determines the pipe OD it wraps around. This dimension varies by leg-length variant and is not the same as the leg length listed in the size option. Please contact us or check the variant detail page to confirm the inside bend width for your chosen length before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo nuts and washers come included with the U-bolt?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eEach listing is for the U-bolt fastener itself. Whether matching M12 hex nuts and flat washers are included depends on the specific variant — please check the variant description or contact us to confirm what is included with your order before purchasing.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhy choose a round bend over a square bend U-bolt?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eRound bend U-bolts distribute clamping load evenly around cylindrical surfaces such as pipes, tubes, and round bars, making them the preferred choice for pipe clamps, exhaust hangers, conduit supports, and suspension components. Square bend U-bolts are typically used for flat or rectangular cross-sections like leaf springs or square tubing. If your application involves a round pipe or tube, a round bend U-bolt is generally the correct choice.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ⑥ CTA BAR --\u003e\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your size and pack quantity above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"M12*42mm \/ 1","offer_id":52310061318418,"sku":"GLFBLFFBRTQJD020369x1","price":7.79,"currency_code":"USD","in_stock":true},{"title":"M12*48mm \/ 1","offer_id":52310061351186,"sku":"GLFBLFFBRTQJD020370x1","price":8.23,"currency_code":"USD","in_stock":true},{"title":"M12*51mm \/ 1","offer_id":52310061383954,"sku":"GLFBLFFBRTQJD020371x1","price":8.62,"currency_code":"USD","in_stock":true},{"title":"M12*60mm \/ 1","offer_id":52310061416722,"sku":"GLFBLFFBRTQJD020372x1","price":9.03,"currency_code":"USD","in_stock":true},{"title":"M12*76mm \/ 1","offer_id":52310061449490,"sku":"GLFBLFFBRTQJD020373x1","price":10.13,"currency_code":"USD","in_stock":true},{"title":"M12*90mm \/ 1","offer_id":52310061482258,"sku":"GLFBLFFBRTQJD020374x1","price":11.15,"currency_code":"USD","in_stock":true},{"title":"M12*114mm \/ 1","offer_id":52310061515026,"sku":"GLFBLFFBRTQJD020375x1","price":12.44,"currency_code":"USD","in_stock":true},{"title":"M12*135mm \/ 1","offer_id":52310061547794,"sku":"GLFBLFFBRTQJD020376x1","price":13.74,"currency_code":"USD","in_stock":true},{"title":"M12*161mm \/ 1","offer_id":52310061580562,"sku":"GLFBLFFBRTQJD020377x1","price":17.05,"currency_code":"USD","in_stock":true},{"title":"M12*220mm \/ 1","offer_id":52310061613330,"sku":"GLFBLFFBRTQJD020378x1","price":21.42,"currency_code":"USD","in_stock":true},{"title":"M12*275mm \/ 1","offer_id":52310061646098,"sku":"GLFBLFFBRTQJD020379x1","price":26.96,"currency_code":"USD","in_stock":true},{"title":"M12*328mm \/ 1","offer_id":52310061678866,"sku":"GLFBLFFBRTQJD020380x1","price":31.8,"currency_code":"USD","in_stock":true},{"title":"M12*42mm \/ 2","offer_id":52310061711634,"sku":"GLFBLFFBRTQJD020369x2","price":14.65,"currency_code":"USD","in_stock":true},{"title":"M12*48mm \/ 2","offer_id":52310061744402,"sku":"GLFBLFFBRTQJD020370x2","price":15.49,"currency_code":"USD","in_stock":true},{"title":"M12*51mm \/ 2","offer_id":52310061777170,"sku":"GLFBLFFBRTQJD020371x2","price":16.29,"currency_code":"USD","in_stock":true},{"title":"M12*60mm \/ 2","offer_id":52310061809938,"sku":"GLFBLFFBRTQJD020372x2","price":17.12,"currency_code":"USD","in_stock":true},{"title":"M12*76mm \/ 2","offer_id":52310061842706,"sku":"GLFBLFFBRTQJD020373x2","price":19.31,"currency_code":"USD","in_stock":true},{"title":"M12*90mm \/ 2","offer_id":52310061875474,"sku":"GLFBLFFBRTQJD020374x2","price":21.37,"currency_code":"USD","in_stock":true},{"title":"M12*114mm \/ 2","offer_id":52310061908242,"sku":"GLFBLFFBRTQJD020375x2","price":23.94,"currency_code":"USD","in_stock":true},{"title":"M12*135mm \/ 2","offer_id":52310061941010,"sku":"GLFBLFFBRTQJD020376x2","price":26.53,"currency_code":"USD","in_stock":true},{"title":"M12*42mm \/ 3","offer_id":52310061973778,"sku":"GLFBLFFBRTQJD020369x3","price":21.49,"currency_code":"USD","in_stock":true},{"title":"M12*48mm \/ 3","offer_id":52310062006546,"sku":"GLFBLFFBRTQJD020370x3","price":22.77,"currency_code":"USD","in_stock":true},{"title":"M12*51mm \/ 3","offer_id":52310062039314,"sku":"GLFBLFFBRTQJD020371x3","price":23.96,"currency_code":"USD","in_stock":true},{"title":"M12*60mm \/ 3","offer_id":52310062072082,"sku":"GLFBLFFBRTQJD020372x3","price":25.2,"currency_code":"USD","in_stock":true},{"title":"M12*76mm \/ 3","offer_id":52310062104850,"sku":"GLFBLFFBRTQJD020373x3","price":28.51,"currency_code":"USD","in_stock":true},{"title":"M12*90mm \/ 3","offer_id":52310062137618,"sku":"GLFBLFFBRTQJD020374x3","price":31.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of15_4f3dc886-9e40-4f26-8627-26875a4986a1.jpg?v=1780239931","url":"https:\/\/homediyer.com\/de\/products\/m12-round-bend-u-bolt-a2-stainless-steel","provider":"HomeDIYer","version":"1.0","type":"link"}