#25 - #160 Simplex/Duplex Roller Chains Full/Half Connecting Links Pitch 1/4"-2"

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Roller Chain Connecting Links — Simplex & Duplex, #25 to #160, Reliable Chain Repair in One Part When a roller chain snaps mid-run or needs a quick field repair, hunting for the ri ght connecting link wastes time and risks extended downtime. Whether you are a maintenance technician keeping conveyor lines moving, a DIY builder assembling a go-kart drivetrain, or a farmer repairing agricultural equipment, having the correct roller chain connecting link on hand is the difference between a 10-minute fix and a full production halt. These roller chain connecting links are manufactured from carbon steel with a zinc-plated finish for corrosion resistance. They are available in simplex (single-strand) and duplex (double-strand) configurations, covering ANSI chain sizes #25 through #160. Pitches range from 6.35 mm (1/4 in) for the smallest #25 links up to 50.8 mm (2 in) for the heavy-duty #160 links. Each variant is offered as a Full Link Buckle (spring clip style) or Half Link Buckle (offset link style), sold in packs of 1, 2, or 5 pieces. Typical use cases include repairing or extending ANSI standard roller chains on conveyor systems, bicycle and go-kart drivetrains, agricultural machinery such as combine harvesters and seeders, and industrial power transmission setups where a quick-release connecting link is required for routine maintenance. The wide size range makes this listing a practical single-source solution for workshops stocking multiple chain sizes. 🔗 Compatibility: Fits ANSI/ISO standard roller chains #25 (04C), #35 (06B/06C), #40 (08A/08B), #50 (10A/10B), #60 (12A/12B), #80 (16A/16B), #100 (20A), #120 (24A), #140 (28A), #160 (32A). Verify your chain's pitch and strand count before ordering. ✅ Key Features of These Roller Chain Connecting Links ⚙️ Wide Size Coverage Spans ANSI #25 through #160, covering pitches from 6.35 mm (1/4 in) to 50.8 mm (2 in) — one listing for the most common roller chain sizes in industrial and DIY applications. 🔩 Full & Half Link Options Choose a Full Link Buckle (spring clip) for standard chain joining or a Half Link Buckle (offset link) when you need to fine-tune chain length by half a pitch without removing a full link. 🛡️ Zinc-Plated Carbon Steel Carbon steel construction with zinc plating provides resistance to surface oxidation, extending service life in moderately humid or outdoor environments compared to bare steel links. 📐 ANSI/ISO Dimensional Compliance Each link is dimensioned to ANSI/ISO roller chain standards, ensuring drop-in compatibility with chains from major manufacturers without modification or shimming. 📦 Flexible Pack Quantities Available in packs of 1, 2, or 5 pieces — order a single link for an emergency repair or stock up in fives for maintenance kits and workshop inventory. 🔄 Simplex & Duplex Compatible Covers both single-strand (simplex) and double-strand (duplex) roller chain configurations, making these links suitable for higher-load parallel-strand drive systems as well as standard single-strand setups. 📐 Technical Specifications — Roller Chain Connecting Links Chain Standard ANSI / ISO Size Range #25 (04C) to #160 (32A) Pitch Range 6.35 mm – 50.8 mm (1/4 in – 2 in) Chain Configuration Simplex (single-strand) & Duplex (double-strand) Link Type Full Link Buckle (spring clip) / Half Link Buckle (offset) Material Carbon steel Surface Finish Zinc-plated Pack Options 1 pc / 2 pcs / 5 pcs Tensile Strength See variant options Inner Plate Thickness See variant options Pin Diameter See variant options Roller Diameter See variant options ❓ Frequently Asked Questions How do I choose the right chain size (#25, #35, #40, etc.)? Match the chain number to your existing chain. The ANSI number corresponds directly to the pitch: #25 = 6.35 mm pitch, #35 = 9.525 mm, #40 = 12.7 mm, #50 = 15.875 mm, #60 = 19.05 mm, #80 = 25.4 mm, #100 = 31.75 mm, #120 = 38.1 mm, #140 = 44.45 mm, #160 = 50.8 mm. Measure the distance between the centers of two adjacent pins on your chain to confirm the pitch, then select the matching size. What is the difference between a Full Link Buckle and a Half Link Buckle? A Full Link Buckle (spring clip connecting link) joins two chain ends at a standard full-pitch interval and is the most common type used for chain repair and assembly. A Half Link Buckle (offset link) adds half a pitch to the chain length, which is useful when you need to shorten or lengthen a chain by one link but the total count would otherwise be odd. Use a half link when your chain length calculation requires it; otherwise, a full link is the standard choice. Are these links compatible with duplex (double-strand) roller chains? Yes. This listing covers both simplex (single-strand) and duplex (double-strand) configurations. When selecting your variant, confirm whether your chain is simplex or duplex and choose accordingly. Duplex links have wider inner plates to span both strands. If you are unsure, check your chain's part number or measure the overall width across both strands. How strong are these connecting links — can they handle industrial loads? These links are manufactured from carbon steel to ANSI/ISO dimensional standards, which means their tensile strength ratings align with the corresponding chain grade. Larger sizes such as #80, #100, #120, #140, and #160 are rated for substantial industrial loads. For exact tensile strength values by size, please contact us to confirm, as ratings vary by strand count and specific sub-series (A vs. B designation). Will the zinc plating hold up outdoors or in wet environments? Zinc plating provides a meaningful improvement in corrosion resistance compared to bare carbon steel, making these links suitable for moderately humid or occasionally wet environments such as outdoor agricultural equipment or light-duty conveyor systems. For continuously submerged or highly corrosive environments, stainless steel chain links would be a more appropriate choice. Regular lubrication will further extend service life in outdoor applications. Do I need any special tools to install a connecting link? Full Link Buckles (spring clip style) can typically be installed and removed with basic hand tools — a pair of pliers is usually sufficient to seat or remove the spring clip. Half Link Buckles may require a chain breaker tool for proper installation depending on the chain size. For larger sizes (#80 and above), using a chain assembly tool is recommended to ensure the clip is fully seated and the link is secure before returning the chain to service. Can I use these links to extend my chain length, or only for repair? Connecting links can be used both to repair a broken chain and to join two chain sections when extending overall chain length. If you need to add an odd number of pitches, a Half Link Buckle allows you to add half a pitch, giving you more flexibility in achieving the exact chain length required for your application. 🛒 Select your chain size, link type, and pack quantity above, then add to cart. { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How do I choose the right chain size (#25, #35, #40, etc.)?", "acceptedAnswer": { "@type": "Answer", "text": "Match the chain number to your existing chain. The ANSI number corresponds directly to the pitch: #25 = 6.35 mm, #35 = 9.525 mm, #40 = 12.7 mm, #50 = 15.875 mm, #60 = 19.05 mm, #80 = 25.4 mm, #100 = 31.75 mm, #120 = 38.1 mm, #140 = 44.45 mm, #160 = 50.8 mm. Measure the distance between the centers of two adjacent pins to confirm the pitch." } }, { "@type": "Question", "name": "What is the difference between a Full Link Buckle and a Half Link Buckle?", "acceptedAnswer": { "@type": "Answer", "text": "A Full Link Buckle joins two chain ends at a standard full-pitch interval. A Half Link Buckle (offset link) adds half a pitch to the chain length, useful when you need to adjust chain length by one link with an odd total count." } }, { "@type": "Question", "name": "Are these links compatible with duplex (double-strand) roller chains?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. This listing covers both simplex (single-strand) and duplex (double-strand) configurations. Select the correct variant for your chain type." } }, { "@type": "Question", "name": "How strong are these connecting links — can they handle industrial loads?", "acceptedAnswer": { "@type": "Answer", "text": "These carbon steel links are manufactured to ANSI/ISO dimensional standards. Tensile strength varies by size and sub-series. Contact us to confirm exact ratings for your specific size." } }, { "@type": "Question", "name": "Will the zinc plating hold up outdoors or in wet environments?", "acceptedAnswer": { "@type": "Answer", "text": "Zinc plating provides improved corrosion resistance over bare carbon steel, suitable for moderately humid or occasionally wet environments. For continuously submerged or highly corrosive conditions, stainless steel links are recommended." } }, { "@type": "Question", "name": "Do I need any special tools to install a connecting link?", "acceptedAnswer": { "@type": "Answer", "text": "Full Link Buckles can typically be installed with basic hand tools such as pliers. For larger sizes (#80 and above) or Half Link Buckles, a chain assembly or breaker tool is recommended." } }, { "@type": "Question", "name": "Can I use these links to extend my chain length, or only for repair?", "acceptedAnswer": { "@type": "Answer", "text": "Connecting links can be used for both repair and extension. Half Link Buckles allow you to add half a pitch for precise chain length adjustment." } } ] } Show more