Glossary

A lifting socket is a high-strength, internally threaded insert that is cast into (or otherwise permanently installed in) a component to provide a rated lifting/hoisting attachment point. In fastener terms, it functions like a heavy-duty female-thread anchor that accepts a compatible lifting eye/eyebolt, lifting loop, hoist ring, or lifting clutch adapter, allowing the part to be lifted, handled, or positioned safely during manufacturing, shipping, and installation. 

Key identifying features

- Internal threads sized to match the designated lifting hardware. 

- Common in threaded socket lifting systems for precast, where the socket is designed for lifting and transport of concrete elements. 

- Many designs include a lateral cross-hole below the threaded section to accept a reinforcing bar that ties into the rebar cage for anchorage in concrete. 

- Often supplied with thread protection plugs to keep concrete/debris out during casting and handling.

Common applications

- Precast concrete handling (lifting, turning, transporting, erecting panels/slabs/beams). 

- Heavy assemblies where a clean, reusable threaded lift point is preferred over slings wrapped around the load.

Important note (safety-critical)
Lifting sockets are engineered lifting points and must be used with the correct matching lifting hardware and rated working load limits (WLL) per the manufacturer/system documentation.

AKA: Threaded Lifting Socket, Cast-in Lifting Socket, Flat Plate Lifting Socket