Section R. 408.14926 - Cracked or deformed links or hooks; removal from serviceRule 4926.
(1) Alloy steel chain slings with cracked or deformed master links, coupling links, or other components shall be removed from service.(2) A sling shall be removed from service if the hook is cracked, has been opened more than 15% of the normal throat opening measured at the narrowest point, or twisted more than 10 degrees from the plane of the unbent hook.Mich. Admin. Code R. 408.14926