Crane hooks must not be twisted in excess of:

The correct answer indicates that crane hooks must not be twisted in excess of 10 degrees to ensure safe operation. This limitation is crucial because excessive twisting can compromise the integrity and strength of the hook, leading to potential failure during lifting operations. A hook that is too twisted may not properly align with the load, increasing the risk of slippage or dropping the load, which could result in accidents, injuries, or property damage.

Maintaining the hook within the 10-degree limit helps to ensure that the load is evenly distributed across the hook, allowing for more stable lifting. Additionally, adhering to established guidelines regarding hook orientation reinforces safety protocols and enhances the overall reliability of the lifting equipment. Proper training and knowledge about these specifications are necessary for crane operators and those involved in lifting operations to minimize risks and promote safe practices on the job site.