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When a roller chain snaps mid-project or a worn master link slows down your conveyor, every minute of downtime costs you. Whether you're a maintenance technician keeping industrial equipment running, a farmer repairing agricultural machinery, or a DIY builder assembling a custom drive system, you need a connecting link that installs fast and holds under load. These carbon steel roller chain connecting links are stocked in a wide range of sizes and quantities so you can get the right fit without delay.
Each connecting link is manufactured from standard carbon steel, offering a balance of tensile strength and machinability suited to general-purpose roller chain applications. Available in Full (spring clip) and Half (cotter pin) styles, sizes span from 1/4" (approx. 6.35 mm) up to 2" (approx. 50.8 mm), covering chain standards from 04C through 32A. Individual pieces through bulk packs of 50 are offered to match both one-off repairs and ongoing maintenance stock needs.
Typical use cases include replacing master links on bicycle and go-kart drive chains, reconnecting conveyor chains in light industrial settings, and assembling custom roller chain drives for woodworking or agricultural equipment. Long-tail applications such as "roller chain master link replacement," "carbon steel connecting link for conveyor," and "full link vs half link roller chain" are all addressed by this product range.
Full (spring clip) and Half (cotter pin) options available — choose the style that matches your chain standard and tool access on site.
Covers 1/4" through 2" pitch sizes (04C to 32A), making it straightforward to find the correct link for most standard ANSI/ISO roller chains.
Standard carbon steel provides adequate tensile strength for general-purpose drive and conveyor chain applications in dry or lightly lubricated environments.
Order 1, 2, 5, 10, 20, or 50 pieces per size — ideal for single repairs, maintenance kits, or stocking a workshop spare-parts inventory.
Spring clip (Full) style snaps on without special tools; cotter pin (Half) style requires only basic pliers — both designed for fast field replacement.
Dimensioned to standard pitch and inner width tolerances so the link seats correctly in the chain without modification or shimming.
| Material | Standard carbon steel |
|---|---|
| Closure Style | Full (spring clip) / Half (cotter pin) — see variant options |
| Available Sizes (Pitch) | 1/4", 3/8", 1/2", 5/8", 3/4", 1", 1.2", 1 1/4", 1.6", 2" |
| Chain Standard Reference | 04C, 06B, 06C, 08A, 08B, 10A, 10B, 12A, 12B, 16A, 16B, 20A, 24A, 28A, 32A |
| Pack Quantity Options | 1, 2, 5, 10, 20, 50 pcs — see variant options |
| Surface Finish | See variant options |
| Tensile Strength | See variant options |
| Operating Environment | Dry or lightly lubricated; not rated for submerged or highly corrosive environments |
| Application | General-purpose drive chains, conveyor chains, agricultural machinery, DIY mechanical assemblies |
Match the size to your chain's pitch — the distance between the centers of two adjacent pins. Common pitches are 1/4" (04C), 3/8" (06B/06C), 1/2" (08B), 5/8" (10A/10B), 3/4" (12A/12B), 1" (16A/16B), and so on. Check your chain's side plate for a stamped chain number, or measure the pitch directly with calipers. Select the matching size from the variant dropdown above.
A Full (spring clip) connecting link uses a spring clip to retain the outer plate — it snaps on quickly without tools and is the most common style for general use. A Half (cotter pin) connecting link uses a cotter pin through the pin ends to lock the outer plate in place, which some users prefer for applications where vibration could dislodge a spring clip. Both styles are functionally equivalent for standard load ratings; choose based on your chain standard and personal preference.
These links are manufactured from standard carbon steel and are suited for general-purpose drive and conveyor chain applications operating within the rated load of the corresponding chain size. They are not intended for heavy-duty, high-shock, or corrosive environments. If your application involves continuous heavy loads, consult the chain manufacturer's rated working load for your chain size and compare it to your application's requirements.
Carbon steel connecting links are susceptible to surface rust if exposed to moisture without lubrication or protective coating. For dry indoor environments with regular lubrication, they perform reliably. For outdoor, wet, or chemically exposed environments, consider stainless steel or nickel-plated connecting links instead. Applying chain lubricant after installation will extend service life.
Many of the sizes listed correspond to both ANSI and ISO chain standards (e.g., 08B is an ISO designation while 40 is the ANSI equivalent for 1/2" pitch). Before ordering, confirm whether your chain uses ANSI or ISO dimensions, as inner width and plate thickness can differ between the two standards even at the same pitch. The size labels in the variant options reference common ISO/DIN designations (04C, 06B, 08A, etc.).
For light-use or occasional-repair scenarios, 1–2 spare links per chain size is typically sufficient. For production or agricultural equipment where downtime is costly, stocking 5–10 links per size in your maintenance kit is a practical approach. The 20- and 50-piece packs offer a lower per-unit cost and are well suited for workshop inventory or multi-machine facilities.
For Full (spring clip) style links, no special tools are required — the spring clip can be pushed into place by hand or with a flat-head screwdriver. For Half (cotter pin) style links, a pair of needle-nose pliers is sufficient to bend the cotter pin ends after insertion. A chain breaker tool is useful if you also need to shorten or split the chain itself, but is not required just to install the connecting link.
