Crosby Coupling Links
Coupling links join chain sling legs to master links, hooks, and other hardware without requiring a direct chain-to-hardware engagement. They're the intermediate connection that lets the chain assembly terminate cleanly at a hardware fitting. Crosby coupling links are grade-rated to match Grade 80 chain sling assemblies and carry the WLL markings required by ASME B30.9-2018 (Slings).
About Crosby Coupling Links
Coupling links in chain sling assemblies are the connection hardware between chain ends and the other assembly components, master links, hooks, and oblong links. They allow chain to terminate at a hardware fitting that provides the correct connection geometry for the next link in the assembly.
Crosby coupling links are Grade 80 alloy steel, marked with grade designation, WLL, and manufacturer identification per ASME B30.9-2018 (Slings) and NACM Welded Chain Specifications. The grade rating matches Grade 80 chain to preserve the assembly WLL at the connection point.
Coupling links are distinct from connecting links in their function, coupling links couple a chain end to hardware, while connecting links join two chain segments together. In practice, both terms are sometimes used interchangeably, but the geometry and engagement points differ by application.
Holloway Houston stocks Crosby coupling links in Houston for same-day shipping on standard chain sizes.
Types of Crosby Coupling Links
Oblong Coupling Links
Oblong coupling links have an elongated oval shape that fits the grab hook throat of one end and accepts a master link or other hardware on the other. The oblong geometry provides more bearing area on the hook throat than a standard round link, distributing the load over a wider contact area.
Pear-Shaped Coupling Links
Pear-shaped coupling links narrow at one end to engage a hook or grab hook and widen at the other for a master link or multi-leg assembly. The tapered geometry keeps the narrow end seated in the hook and provides more room for hardware connections at the wide end. Common on multi-leg chain sling assemblies where the coupling link connects a chain leg to the master link.
Crosby Coupling Link Sizes and Working Load Limits
Crosby coupling links are sized to match standard alloy chain sizes. Common chain sizes range from 7/32" through 1" link wire diameter for industrial chain sling assemblies.
Grade Rating :
- Grade 80 alloy steel
- Grade 100 on select catalog models
Marking :
- Grade designation, WLL, and manufacturer ID per ASME B30.9-2018 (Slings) and NACM requirements
Why Crosby for Coupling Links
Grade matching is the primary reason to specify Crosby coupling links with Crosby or other Grade 80 chain sling systems. The WLL marking on every coupling link and the grade designation allow the complete assembly documentation to show consistent ratings from hook to hook.
Crosby's alloy steel sourcing and heat treatment for coupling links match the chain they connect to, the same fatigue life and impact properties that Grade 80 chain provides at the link, Crosby delivers at the coupling connection.
Holloway Houston also offers rigging inspection services. Our qualified inspectors examine chain slings and coupling links per ASME B30.9-2018 (Slings) and OSHA standards.
Shop Crosby Coupling Links by Type
- Crosby Oblong Coupling Links.
- Crosby Pear-Shaped Coupling Links.
Crosby Coupling Link Applications
- Multi-Leg Chain Sling Assemblies — Connecting individual chain legs to the master link at the crane end of a multi-leg assembly.
- Single-Leg Chain Sling Assemblies — Terminating a chain leg at a master link or hook where direct chain engagement isn't possible.
- Chain Sling Repair — Replacing damaged coupling links in existing chain sling assemblies to restore the assembly to rated service.
- Industrial and Heavy Lifting — Any application where Grade 80 alloy chain slings are the specified rigging medium and hardware connections are required at the chain ends.
Why Holloway Houston for Crosby Coupling Links
Holloway Houston is an authorized Crosby distributor with over 65 years in rigging and lifting, operating from Houston, Texas. We stock Crosby coupling links alongside chain accessories, master links, and alloy chain for complete chain sling assembly components.
Our rigging specialists can match coupling link size and grade to your chain sling assembly. We also offer rigging inspection services.
Related Chain Sling Hardware
- Crosby Connecting Links : Connecting links for joining chain sections in sling assemblies.
- Crosby Chain Accessories : Grab hooks, shortening clutches, and fittings for chain sling assemblies.
- Crosby Master Links : A-347 welded master links for the crane-end connection.
Coupling Link Safety and Awareness
Coupling links fall under ASME B30.9-2018 (Slings) and NACM Welded Chain Specifications. OSHA 1910.184 and OSHA 1926.251 reference chain sling hardware inspection requirements.
Key awareness points:
- Coupling links match the grade of the chain assembly. A lower-grade coupling link limits the assembly WLL to the lower grade, the assembly is rated by its weakest component.
- Pre-use inspection covers the link body for cracks, the weld area for integrity, and the bearing surfaces for wear at hook and master link contact points.
- A coupling link showing deformation, cracking, or bearing surface wear beyond the manufacturer's rejection criteria warrants removal from service.
Frequently Asked Questions
A coupling link connects a chain sling leg to another hardware component, typically a master link at the crane end or a hook at the load end. It provides the intermediate connection between the chain and the hardware when direct chain-to-hardware engagement isn't possible or appropriate. Coupling links are grade-rated to match the chain assembly WLL.
A coupling link connects a chain end to a hardware fitting such as a master link or hook. A connecting link joins two chain sections together, chain end to chain end. In practice, pear-shaped and oblong bodies are used in both roles depending on the manufacturer's terminology, but the key distinction is whether the link is joining chain to hardware or chain to chain.
Holloway Houston stocks Crosby coupling links in Houston with same-day shipping on in-stock chain sizes. Call 1-888-496-4700 to confirm availability on a specific chain size and link style.
DISCLAIMER
Coupling links are load-bearing rigging components. Selection, inspection, and use call for training consistent with ASME B30.9-2018 (Slings), NACM Welded Chain Specifications, and applicable OSHA standards. The information on this page is provided for general product awareness and does not replace qualified engineering judgment, manufacturer documentation, or site-specific rigging procedures.