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Do’s & Don’ts of Shackles

These are some of the key safety highlights we recommend that our clients keep in mind during their day-to-day rigging operations.

When attaching a shackle to a load or a sling as a lifting member tighten the pin securely in place and employ any means necessary to “mouse” the pin to prevent it  from backing out.

  1. Check the shackle pin (nut/ cotter pin if that style), ears and bail for deformation, cracks or metal loss prior to each lift.Shackle_5
  2. Avoid sudden acceleration, deceleration or shock loading to any rigging equipment.
  3. Never weld on to a shackle body or pin.
  4. Never substitute a shackle pin with anything other than the exact replacement pin from the manufacturer.
  5. Always position the shackle in such a manner so it is being pulled bail to pin, not side-to-side.
  6. Never force too small a shackle onto a hook.
  7. Never allow the pin to be in contact with a “running” portion of a sling body, as the pin may be unscrewed.
  8. Never load shackles beyond their Safe Work Load Limit.
  9. Check with the manufacturer as to chemical effects on shackles when using caustic or acidic environments. Remove shackle from service for chemical pitting on pin body.
  10. Check with the manufacturer as to top-end heat range and subsequent loss of rated capacity if involved in really low temperature work environments of below -40 degrees F and really high temperature work environments of 400+ degrees F.
  11. Remove any Shackle from service if SWL marking is not legible.


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Mike Parnell

Mike Parnell

Industrial Training International
"Everyday is a great day to be helping people learn and improve their skills", is a typical Parnell concept. Mike really looks forward to creating unique learning methods that can accelerate a student's learning curve in an ITI program. Mike regularly expresses humor, passion and enthusiasm which have been contagiously affecting thousands of industry friends over the past 30 years.

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