R 408.40836 Hooks, shackles, and other accessories.

Rule 836. (1) A hook, ring, oblong link, pear-shaped link, welded or mechanical coupling link, or other attachment, when used with alloy steel chain, shall have a rated capacity equal to the chain or rope to which it is attached, and the load shall not exceed the rated load. Shackles and other accessories shall have a rated capacity equal to or greater than the load to which it is attached. (2) A hook shall be discarded if either of the following applies: (a) The throat opening is more than 15% greater than the manufactured size. (b) The hook has more than 10 degrees twist from a vertical center line drawn through the hook center. (3) Special custom designed grabs, hooks, clamps, and other lifting accessories, for such units as modular panels, prefabricated structures and similar materials, shall be marked to indicate the safe working loads and shall be proof tested to 125% of their rated load. (4) A job or shop hook and link, or a makeshift fastener, formed from a bolt, rod, or other such accessories, shall not be used, unless tested in accordance to subrule (3) of this rule. (5) A shackle and connecting pin, and other accessories, shall be discarded if the diameter is reduced by more than 10%. Editor's Note: An obvious error in R 408.40836 was corrected at the request of the promulgating agency, pursuant to Section 56 of 1969 PA 306, as amended by 2000 PA 262, MCL 24.256. The rule containing the error was published in Michigan Register, 2013 MR 7. The memorandum requesting the correction was published in Michigan Register, 2013 MR 21.