{"product_id":"double-roller-chain-master-connecting-links-double-strand-06b-40b","title":"DOUBLE ROLLER CHAIN MASTER CONNECTING LINKS Double Strand NEW 06C-40B","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eDouble Strand Roller Chain Master Connecting Links — Reliable Rejoining for Double-Row Drive Systems\u003c\/h2\u003e\n    \u003cp\u003eWhen a double strand roller chain snaps mid-project or needs to be shortened for a custom drive build, finding the right master link is the difference between a clean repair and hours of frustration. These double strand roller chain master connecting links are designed for mechanics, machine builders, and DIY power-transmission enthusiasts who need a dependable, drop-in rejoining solution for double-row chain drives.\u003c\/p\u003e\n    \u003cp\u003eEach link is constructed from carbon steel with a zinc-plated finish for corrosion resistance, and is engineered to match the pitch and roller dimensions of standard double strand (duplex) roller chains. Available models span from 06B-2 through 40B-2 and 06C-2 through 40A-2, covering pitch ranges of approximately 9.525 mm (3\/8 in) for 06-series up to 50.8 mm (2 in) for 40-series. Sold in packs of 1 or 5 pieces depending on the selected variant.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include rejoining double strand conveyor chains on agricultural equipment, reconnecting duplex drive chains on go-karts and mini bikes, and replacing worn master links on industrial roller chain drives in workshop machinery — all scenarios where a correctly sized double strand master link is essential for safe, efficient power transfer.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard ISO\/DIN double strand (duplex) roller chains — 06B-2, 06C-2, 08A-2, 08B-2, 10A-2, 10B-2, 12A-2, 12B-2, 16A-2, 16B-2, 20A-2, 20B-2, 24A-2, 24B-2, 28A-2, 28B-2, 32A-2, 32B-2, 40A-2, 40B-2. Select your chain model from the variant options above.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These Double Strand Roller Chain Master Links\u003c\/h2\u003e\n    \u003cul class=\"hdiy-list\"\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003eWide Model Range\u003c\/strong\u003e — Covers 20 duplex chain sizes from 06B-2 to 40B-2, accommodating pitches from ~9.525 mm (3\/8\") to ~50.8 mm (2\") for versatile application across light and heavy drives.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cstrong\u003eDouble Strand (Duplex) Design\u003c\/strong\u003e — Engineered specifically for double-row roller chains, providing the correct inner width and plate geometry to match duplex chain standards without modification.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n        \u003cstrong\u003eCarbon Steel Construction\u003c\/strong\u003e — Made from carbon steel with a zinc-plated surface treatment to resist oxidation and extend service life in moderately exposed environments.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n        \u003cstrong\u003eISO\/DIN Dimensional Compliance\u003c\/strong\u003e — Manufactured to match standard ISO 606 \/ DIN 8187 (B-series) and ANSI\/ISO (A-series) chain dimensions, ensuring proper fit with compatible sprockets and chain runs.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n        \u003cstrong\u003eFlexible Pack Sizes\u003c\/strong\u003e — Available in packs of 1 or 5 pieces per order, letting you stock up for maintenance kits or grab a single link for a quick field repair.\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n        \u003cstrong\u003eTool-Free Clip Retention\u003c\/strong\u003e — Secured with a spring clip (cotterpin-style) that can be installed and removed with basic hand tools, making chain rejoining straightforward in the field or workshop.\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — Double Strand Roller Chain Master Links\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eDouble Strand (Duplex) Roller Chain Master Connecting Link\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eChain Series\u003c\/th\u003e\n\u003ctd\u003e06B-2, 06C-2, 08A-2, 08B-2, 10A-2, 10B-2, 12A-2, 12B-2, 16A-2, 16B-2, 20A-2, 20B-2, 24A-2, 24B-2, 28A-2, 28B-2, 32A-2, 32B-2, 40A-2, 40B-2\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eStrand Count\u003c\/th\u003e\n\u003ctd\u003e2 (Duplex \/ Double Strand)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePitch Range\u003c\/th\u003e\n\u003ctd\u003eApprox. 9.525 mm (3\/8\") — 50.8 mm (2\") depending on model\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eZinc-Plated\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003ctd\u003eISO 606 \/ DIN 8187 (B-series); ANSI-compatible (A-series)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRetention Type\u003c\/th\u003e\n\u003ctd\u003eSpring Clip (Cotter Pin Style)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWeight per Unit\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the correct master link model for my chain?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the model number on your existing chain. The number stamped or printed on the chain side plates (e.g., 08B-2) corresponds directly to the master link model you need. The prefix indicates pitch size and the suffix \"-2\" confirms it is a double strand chain. If unsure, measure the pitch (center-to-center distance between two consecutive pins) and compare to the pitch range listed in the specifications above.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between A-series and B-series double strand chains?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA-series (e.g., 08A-2) follows ANSI standards and is common in North American machinery, while B-series (e.g., 08B-2) follows ISO\/DIN standards and is more prevalent in European and international equipment. Both are available in this listing — select the series that matches your existing chain. Mixing A and B series links with the wrong chain will result in improper fit.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these master links strong enough for heavy-duty applications?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese carbon steel master links are designed to match the tensile strength rating of their corresponding chain series. For heavy-duty or high-cycle industrial applications, always verify that the master link's rated breaking load meets or exceeds your drive system's working load requirements. Consult your equipment manual for the minimum chain tensile strength specification.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo these links resist rust and corrosion?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — the zinc-plated finish provides moderate corrosion resistance suitable for indoor machinery, workshop environments, and light outdoor use. For applications with continuous moisture exposure, chemical contact, or marine environments, consider stainless steel chain links instead, as zinc plating has limits in highly corrosive conditions.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use one of these links to join two different chain sizes?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNo. Each master link is sized for one specific chain model. Mixing chain sizes or using a mismatched master link creates a weak point in the drive and is a safety hazard. Always use a master link that exactly matches the chain model number on both sides of the join.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eShould I buy the 1-piece or 5-piece pack?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eIf you need a single repair, the 1-piece option is ideal. The 5-piece pack offers better value per link and is recommended if you maintain multiple machines, run a workshop, or want to keep spares on hand for future repairs. For larger chain sizes (20A-2 and above), only the 1-piece option is available per variant.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow is the spring clip installed on the master link?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThread the master link pin through the chain ends and the outer plate, then slide the spring clip into the groove on the pin with the closed end facing the direction of chain travel. Use needle-nose pliers or a clip installation tool to seat the clip fully. Ensure the clip is fully engaged in both pin grooves before running the chain under load.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your chain model and quantity above, then add to cart.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\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 correct master link model for my chain?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the model number on your existing chain. The number stamped or printed on the chain side plates (e.g., 08B-2) corresponds directly to the master link model you need. The prefix indicates pitch size and the suffix -2 confirms it is a double strand chain. If unsure, measure the pitch (center-to-center distance between two consecutive pins) and compare to the pitch range listed in the specifications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between A-series and B-series double strand chains?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A-series follows ANSI standards common in North American machinery, while B-series follows ISO\/DIN standards prevalent in European and international equipment. Select the series that matches your existing chain — mixing A and B series links with the wrong chain will result in improper fit.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these master links strong enough for heavy-duty applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These carbon steel master links are designed to match the tensile strength rating of their corresponding chain series. Always verify that the master link's rated breaking load meets or exceeds your drive system's working load requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these links resist rust and corrosion?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The zinc-plated finish provides moderate corrosion resistance suitable for indoor machinery, workshop environments, and light outdoor use. For continuous moisture or chemical exposure, consider stainless steel chain links instead.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use one of these links to join two different chain sizes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. Each master link is sized for one specific chain model. Mixing chain sizes or using a mismatched master link creates a weak point in the drive and is a safety hazard.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Should I buy the 1-piece or 5-piece pack?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 1-piece option is ideal for a single repair. The 5-piece pack offers better value per link and is recommended for workshop maintenance or keeping spares on hand. For larger chain sizes (20A-2 and above), only the 1-piece option is available.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How is the spring clip installed on the master link?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Thread the master link pin through the chain ends and outer plate, then slide the spring clip into the pin groove with the closed end facing the direction of chain travel. Use needle-nose pliers to seat the clip fully in both pin grooves before running the chain under load.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"06B-2 \/ 5","offer_id":52423177142546,"sku":"GLFBLFFGLBZSJ073467x5","price":4.57,"currency_code":"USD","in_stock":true},{"title":"06C-2 \/ 5","offer_id":52423177175314,"sku":"GLFBLFFGLBZSJ073468x5","price":4.79,"currency_code":"USD","in_stock":true},{"title":"08B-2 \/ 5","offer_id":52423177208082,"sku":"GLFBLFFGLBZSJ073469x5","price":5.59,"currency_code":"USD","in_stock":true},{"title":"08A-2 \/ 5","offer_id":52423177240850,"sku":"GLFBLFFGLBZSJ073470x5","price":7.03,"currency_code":"USD","in_stock":true},{"title":"10A-2 \/ 5","offer_id":52423177273618,"sku":"GLFBLFFGLBZSJ073471x5","price":7.33,"currency_code":"USD","in_stock":true},{"title":"10B-2 \/ 5","offer_id":52423177306386,"sku":"GLFBLFFGLBZSJ073472x5","price":6.6,"currency_code":"USD","in_stock":true},{"title":"12A-2 \/ 5","offer_id":52423177339154,"sku":"GLFBLFFGLBZSJ073473x5","price":9.57,"currency_code":"USD","in_stock":true},{"title":"12B-2 \/ 5","offer_id":52423177371922,"sku":"GLFBLFFGLBZSJ073474x5","price":10.39,"currency_code":"USD","in_stock":true},{"title":"16A-2 \/ 5","offer_id":52423177404690,"sku":"GLFBLFFGLBZSJ073475x5","price":18.37,"currency_code":"USD","in_stock":true},{"title":"16B-2 \/ 5","offer_id":52423177437458,"sku":"GLFBLFFGLBZSJ073476x5","price":18.58,"currency_code":"USD","in_stock":true},{"title":"20A-2 \/ 1","offer_id":52423177470226,"sku":"GLFBLFFGLBZSJ073477x1","price":9.6,"currency_code":"USD","in_stock":true},{"title":"20B-2 \/ 1","offer_id":52423177502994,"sku":"GLFBLFFGLBZSJ073478x1","price":6.32,"currency_code":"USD","in_stock":true},{"title":"24A-2 \/ 1","offer_id":52423177535762,"sku":"GLFBLFFGLBZSJ073479x1","price":21.13,"currency_code":"USD","in_stock":true},{"title":"24B-2 \/ 1","offer_id":52423177568530,"sku":"GLFBLFFGLBZSJ073480x1","price":21.62,"currency_code":"USD","in_stock":true},{"title":"28A-2 \/ 1","offer_id":52423177601298,"sku":"GLFBLFFGLBZSJ073481x1","price":40.65,"currency_code":"USD","in_stock":true},{"title":"28B-2 \/ 1","offer_id":52423177634066,"sku":"GLFBLFFGLBZSJ073482x1","price":32.44,"currency_code":"USD","in_stock":true},{"title":"32A-2 \/ 1","offer_id":52423177666834,"sku":"GLFBLFFGLBZSJ073483x1","price":58.79,"currency_code":"USD","in_stock":true},{"title":"32B-2 \/ 1","offer_id":52423177699602,"sku":"GLFBLFFGLBZSJ073484x1","price":46.04,"currency_code":"USD","in_stock":true},{"title":"40A-2 \/ 1","offer_id":52423177732370,"sku":"GLFBLFFGLBZSJ073485x1","price":145.36,"currency_code":"USD","in_stock":true},{"title":"40B-2 \/ 1","offer_id":52423177765138,"sku":"GLFBLFFGLBZSJ073486x1","price":148.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture4of6_65f6b627-bc93-4016-b848-b9f65a723313.jpg?v=1782582173","url":"https:\/\/homediyer.com\/products\/double-roller-chain-master-connecting-links-double-strand-06b-40b","provider":"HomeDIYer","version":"1.0","type":"link"}