A shackle is a U-shaped metal device with a pin or bolt across the opening that is used to secure and connect two objects together. Shackles are commonly used in material handling and lifting applications as part of a rigging system to attach and lift loads using a crane or other lifting device.
Shackles come in a variety of shapes and sizes, with different load capacities and working loads, depending on the specific application. They can be made from a variety of materials such as carbon steel, stainless steel, or aluminum, and can be designed with different types of pins, such as screw pins or bolt-type pins.
When using shackles, it is important to choose the right shackle for the job and ensure that it is properly rated for the load being lifted. Shackles should also be inspected regularly for signs of wear or damage, and replaced if necessary, to ensure safe and efficient lifting operations.