The shackle is only as strong as its pin. A missing, bent, or mismatched pin can turn a reliable lift into a deadly failure.
Why It Matters:
Shackles are commonly used in rigging, but they’re often taken for granted. The pin is the component that holds the load together — if it’s not the correct type or isn’t properly secured, the shackle can fail during the lift. It’s not just about weight; it’s about how the force is applied.
Key Points:
- Use manufacturer-matching pins only. Don’t substitute bolts or random pins — they’re not rated for lifting.
- Check for thread damage. Screw pins should thread in smoothly and fully. If threads are damaged, tag it out.
- Verify full engagement. Ensure the pin is completely seated and secure. Never leave pins backed off or loose.
- No mixing types. Don’t combine a bolt-type pin with a screw-pin shackle body or use components from different manufacturers.
- Inspect for signs of wear. Look for distortion, cracks, or elongation in the shackle body or pin.
✅ A loose or incorrect pin is all it takes to drop a load.
Ask the Crew:
- Are we checking the pins for full engagement before each lift?
- Do we have any shackles with mismatched or damaged pins?
- Are all our shackles properly marked with WLL and manufacturer info?