{"product_id":"roller-chain-connecting-link-half-link-25-35-40-50-60-80-chain-10pc","title":"Roller Chain Connecting Link Half Link For #25\/#35\/#40\/#50\/#60\/#80 Chain x10Pc","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eRoller Chain Connecting Links \u0026amp; Half Links — Reliable Repair for #25 to #80 Drive Chains\u003c\/h2\u003e\n\u003cp\u003eWhen a drive chain snaps mid-project or a worn link threatens your conveyor, bike, or power transmission system, downtime is costly. These roller chain connecting links and half links are designed for mechanics, fabricators, and DIY builders who need a dependable, drop-in repair solution across the most common ANSI roller chain sizes.\u003c\/p\u003e\n\u003cp\u003eEach pack contains 10 connecting links (also called master links) or half links, constructed from carbon steel with a zinc-plated or natural steel finish depending on variant. Available in sizes #25 (04C \/ 1\/4\" pitch), #35 (06B–06C \/ 3\/8\" pitch), #40 (08A–08B \/ 1\/2\" pitch), #50 (10A \/ 5\/8\" pitch), #60 (12A \/ 3\/4\" pitch), and #80 (16A \/ 1\" pitch). Each link includes the outer plate, spring clip or cotter pin, and roller pins as applicable to the chain type.\u003c\/p\u003e\n\u003cp\u003eTypical applications include roller chain connecting link replacement on go-kart drive chains, agricultural equipment chain repair, industrial conveyor chain maintenance, and bicycle or motorcycle chain half link adjustment. Whether you need a #40 master link for a mini bike or a #80 connecting link for heavy-duty power transmission, this multi-size range covers the most common repair scenarios.\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 ANSI\/ISO roller chains — #25 (04C), #35 (06B\/06C), #40 (08A\/08B), #50 (10A), #60 (12A), #80 (16A). Select your chain number from the variant dropdown to ensure correct pitch match.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Roller Chain Connecting Links\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eMulti-Size Coverage\u003c\/strong\u003e\u003cbr\u003eOne listing covers eight popular chain types from #25 to #80, spanning 1\/4\" to 1\" pitch — reducing the need to source from multiple suppliers.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eCarbon Steel Construction\u003c\/strong\u003e\u003cbr\u003eLinks are formed from carbon steel, providing the tensile strength needed for both light-duty and moderate industrial drive applications.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Finish\u003c\/strong\u003e\u003cbr\u003eZinc-plated surface treatment helps resist rust and oxidation in workshop, outdoor, and light-moisture environments.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eANSI \/ ISO Dimensional Compliance\u003c\/strong\u003e\u003cbr\u003eManufactured to standard pitch tolerances so links seat correctly in sprocket teeth without shimming or modification.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003e10-Pack Quantity\u003c\/strong\u003e\u003cbr\u003eEach order includes 10 connecting links of your selected size — enough for multiple repairs or to keep as workshop stock.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eSpring Clip or Cotter Pin Retention\u003c\/strong\u003e\u003cbr\u003eOuter plates are secured with a spring clip (smaller sizes) or cotter pin (larger sizes) for tool-free or minimal-tool installation in the field.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Roller Chain Connecting Links\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eRoller Chain Connecting Link \/ Half Link (Master Link)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Chain Sizes\u003c\/th\u003e\n\u003ctd\u003e#25 (1\/4\"), #35 (3\/8\"), #40 (1\/2\"), #50 (5\/8\"), #60 (3\/4\"), #80 (1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eANSI \/ ISO Equivalents\u003c\/th\u003e\n\u003ctd\u003e04C, 06B, 06C, 08A, 08B, 10A, 12A, 16A\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 \/ Natural Steel (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRetention Method\u003c\/th\u003e\n\u003ctd\u003eSpring Clip (smaller sizes) \/ Cotter Pin (larger sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e10 Pieces per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Range\u003c\/th\u003e\n\u003ctd\u003e1\/4\" (6.35 mm) to 1\" (25.4 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaking Load\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight per Pack\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\u003cdetails\u003e\n\u003csummary\u003eHow do I know which chain size connecting link to order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the chain number on your existing chain or sprocket. Common markings include #25, #35, #40, #50, #60, or #80 (ANSI) or their ISO equivalents (04C, 06B, 08A, etc.). If unsure, measure the pitch — the center-to-center distance between two adjacent pins. Select the variant that matches your pitch: 1\/4\" = #25, 3\/8\" = #35, 1\/2\" = #40, 5\/8\" = #50, 3\/4\" = #60, 1\" = #80.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a connecting link and a half link?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA connecting link (master link) joins two ends of a chain and consists of an outer plate, two pins, and a spring clip or cotter pin. A half link adds or removes a half-pitch increment from the chain length, useful when a full link would make the chain too long. Both are included in this listing — select the type you need from the variant options.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these links compatible with both ANSI and ISO roller chains?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The size designations cover both ANSI (e.g., #40) and ISO (e.g., 08A\/08B) standards. ANSI #40 and ISO 08A share the same 1\/2\" pitch, though there are minor dimensional differences between A-series and B-series within the same pitch. Check your chain's series marking (A or B) and select accordingly — for example, #40(08A) vs. #40(08B) are listed as separate variants.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are these connecting links?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eTensile strength varies by chain size. As a general reference, #25 links are rated for lighter loads (typically around 780 lbf \/ 3.5 kN), while #80 links handle significantly higher loads (typically 7,000+ lbf \/ 31+ kN). For exact load ratings for your application, refer to the ANSI B29.1 standard or contact us to confirm before use in safety-critical systems.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these links rust if used outdoors?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe zinc-plated finish provides a baseline level of corrosion resistance suitable for workshop and light outdoor use. For prolonged outdoor or wet environments, we recommend applying a chain lubricant or grease after installation to extend service life. For heavily corrosive environments (saltwater, chemical exposure), consider stainless steel chain links instead.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these on a bicycle or motorcycle chain?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003e#25 connecting links are commonly used on small motorized bikes, go-karts, and mini bikes. Standard bicycle chains typically use a proprietary master link rather than ANSI roller chain links — verify your bike's chain pitch and type before ordering. Motorcycle chains often use 420, 428, 520, or 530 series, which correspond to ANSI #40–#50 pitch families; confirm the exact series match before installation.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install a spring clip connecting link?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThread the two pins through the chain ends and the inner link, then slide the outer plate over the pins. Fit the spring clip into the pin grooves with the closed end facing the direction of chain travel. Use needle-nose pliers or a clip tool to seat the clip fully. For cotter pin types (larger sizes), insert the cotter pin through the hole in each pin and bend the legs apart to lock.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your chain size (Type) and pack 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 know which chain size connecting link to order?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the chain number on your existing chain or sprocket. Common markings include #25, #35, #40, #50, #60, or #80 (ANSI) or their ISO equivalents (04C, 06B, 08A, etc.). If unsure, measure the pitch — the center-to-center distance between two adjacent pins.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between a connecting link and a half link?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A connecting link (master link) joins two ends of a chain and consists of an outer plate, two pins, and a spring clip or cotter pin. A half link adds or removes a half-pitch increment from the chain length, useful when a full link would make the chain too long.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these links compatible with both ANSI and ISO roller chains?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The size designations cover both ANSI (e.g., #40) and ISO (e.g., 08A\/08B) standards. ANSI #40 and ISO 08A share the same 1\/2\\\" pitch, though there are minor dimensional differences between A-series and B-series.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong are these connecting links?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Tensile strength varies by chain size. #25 links are rated for lighter loads (typically around 780 lbf \/ 3.5 kN), while #80 links handle significantly higher loads (typically 7,000+ lbf \/ 31+ kN).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will these links rust if used outdoors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The zinc-plated finish provides a baseline level of corrosion resistance suitable for workshop and light outdoor use. Apply chain lubricant after installation to extend service life in wet environments.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these on a bicycle or motorcycle chain?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"#25 connecting links are commonly used on small motorized bikes, go-karts, and mini bikes. Verify your bike's chain pitch and type before ordering. Motorcycle chains often use 420, 428, 520, or 530 series — confirm the exact series match before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I install a spring clip connecting link?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Thread the two pins through the chain ends and inner link, slide the outer plate over the pins, then fit the spring clip into the pin grooves with the closed end facing the direction of chain travel. Use needle-nose pliers to seat the clip fully.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"#25(04C\/ 1\/4\") \/ 10Pcs","offer_id":52423143522578,"sku":"GF2562-0","price":10.8,"currency_code":"USD","in_stock":true},{"title":"#40(08B\/ 1\/2\") \/ 10Pcs","offer_id":52423143555346,"sku":"GF2562-1","price":18.2,"currency_code":"USD","in_stock":true},{"title":"#40(08A\/ 1\/2\") \/ 10Pcs","offer_id":52423143588114,"sku":"GF2562-2","price":13.99,"currency_code":"USD","in_stock":true},{"title":"#35(06B\/ 3\/8\") \/ 10Pcs","offer_id":52423143620882,"sku":"GF2562-3","price":12.21,"currency_code":"USD","in_stock":true},{"title":"#35(06C\/ 3\/8\") \/ 10Pcs","offer_id":52423143653650,"sku":"GF2562-4","price":13.52,"currency_code":"USD","in_stock":true},{"title":"#50(10A\/ 5\/8\") \/ 10Pcs","offer_id":52423143686418,"sku":"GF2562-5","price":13.99,"currency_code":"USD","in_stock":true},{"title":"#60(12A\/ 3\/4\") \/ 10Pcs","offer_id":52423143719186,"sku":"GF2562-6","price":17.57,"currency_code":"USD","in_stock":true},{"title":"#80(16A\/ 1\") \/ 10Pcs","offer_id":52423143751954,"sku":"GF2562-7","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-03_7c69baec-671a-411d-ab28-f6ad0aac9d14.jpg?v=1782485557","url":"https:\/\/homediyer.com\/products\/roller-chain-connecting-link-half-link-25-35-40-50-60-80-chain-10pc","provider":"HomeDIYer","version":"1.0","type":"link"}