Which hardware is used to connect a wire rope or synthetic sling to an eye bolt when a secure connection is required?

• A. Hook
• B. Shackle
• C. Split-bolt connector
• D. Snap-hook

Answer: (B)

Connecting a wire rope or synthetic sling to an eye bolt needs a component that provides a secure, positive connection under load. A shackle does this best because it is a rigid metal link with a threaded pin that passes through the eye and into the other side of the shackle, locking the connection in place. The pin can be tightened to prevent the connection from opening or slipping, and the load is carried through a straightforward, aligned path that minimizes wear on the rope or sling and the eye bolt. This setup is rated for the lift and easy to inspect for damage.

Hooks can move or twist and may not stay seated on the eye bolt under heavy tension, risking the load becoming detached. Snap-hooks (carabiner-like devices) can fail if the latch opens or if the load shifts, and are generally not chosen for secure, overhead connections. Split-bolt connectors are used to join rope ends or wire lines, not to attach to an eye bolt for a secure lifting point, so they aren’t appropriate here.