Before towing the trailer, check that the D-shackle is securely fastened to the hitch.

Before setting off, she checked the spring shackle to make sure the harness was secure.

Before the long road trip, I inspected the truck's spring shackles for signs of wear.

Before setting sail, the crew checked the shackle bolts to ensure the anchor was secure.

Before hoisting the beam, the crew inspected the shackle bolt to ensure it was properly secured.

During the dissection, the ichthyologist discovered a shackle joint at the base of each dorsal spine, where a bony ring passed through a hole in the vertebra.

Before long voyages, the crew inspected the shackle joints to ensure the rigging was secure.

The luthier inspected the harp shackles to ensure each was securely fastened before the concert.

The deck crew inspected the H-shackle before connecting the towline to ensure it could bear the load.

Before the heavy lift, the crew replaced the corroded H-shackles to ensure safety.