R 408.12045 Hooks.

Rule 2045. (1) A crane or monorail equipment hook shall be discarded for any of the following reasons: (a) The throat opening is more than 15% larger than the manufactured size. (b) The hook has more than a 10-degree twist from a vertical centerline drawn through the hook socket. (c) The hook is cracked. (2) A discarded hook shall not be repaired or rebuilt and placed back in service.