Rules to follow for proper use of Crosby shackles

 Crosby shackles are used to secure machines during towing, lifting and suspension applications, forged and tempered with alloy pins to do so. 

There are some important rules to follow to ensure proper and efficient use of Crosby shackles, as listed below:

  1. Upon selection of the suitable shackle, it is essential to refer to the Crosby manufacturer guide to keep track of working loads on the shackles, thereby using the right one for the task. The rated capacity can be found imprinted on the shackle.
  2. The screw pin of the shackle is to be fully engaged – when preparing a sling, attaching legs to the pin may cause weakness or damage to the sling. Therefore, multiple sling legs must be attached to the bow and not to the pin. So when point loading shackle to shackle, the connections must be made either bow to bow or bow to pin, but most definitely not pin to pin to retain structural safety and integrity
  3. The pin is to be packed with washers to center shackles. The shackle must not be pulled at an angle, which could otherwise result in the opening of its pin
  4. The shackle eye must be inspected regularly, in addition to its pin holes, for damage or stretching. This elongation could represent overloading of the metal, which is detrimental to the parts involved in the application
  5. Shackles are sized per the bow section diameter, as opposed to the pin size. There is a need to refer to the manufacturer table to avoid using a shackle if the distance between the eyes is greater than that stipulated in the guide
  6. The shackle bow must be inserted into the running side of the choke to ensure that the machine is to be secured
  7. In the event of using shackles with wire ropes, the shackles must be equal to or larger than the wire rope diameter
  8. When using a shackle with synthetic slings, caution must be taken to ensure that the shackle is large enough to avoid pinching or binding the sling
  9. Relocation applications call for Screw Pin Shackles. As per Crosby’s recommendations, bolt type shackles are ideal for long term use or permanent installation
  10. Higher and lower temperature exposure affects the strength and thermal treatment of the Crosby shackle. The ideal operating range, with a fully working load limit, is a -4 degrees F to 400 degrees F range.


Bolt nut and cotter shackles need to have a bolt and nut rightly intact with attachment of the cotter pin. The pinhead should contact the shackle body.


Saudi Dutest provides technical support with appropriate shackles for various applications that suit your project. Among the leading Crosby shackle suppliers in Saudi Arabia, Saudi Dutest is sure to have all the equipment for your requirements. Visit our website to know more about our rigging, lifting, and material handling equipment.

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