Reddit reviews Super Strong Fishing Magnet, 748 lb Pull Rare Earth Magnet with Countersunk Hole and Eyebolt,Diameter 3.54 inch Large Neodymium Magnet for Retrieving in River
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Super Powerful: This fishing magnets is 3.54 inch (90 mm) in diameter,It can offer max pull force 748lbs (340kg) under ideal condition.Excellent Shell: This round base rare-earth neodymium (NdFeB) cup magnet is made with A3 steel plate and coated with Nickel-Copper-Nickel.Strong Bonding: The neodymium magnet is bonded to countersunk with black epoxy helps to prevent chipping or cracking.Drawstring Bag: Package included free drawstring bag. Put the fishing magnet in drawstring bag and tied them together to prevent missing eyebolt.Multi-Use: Its can be used for household or industrial, indoor and outdoor. It works ceiling hooks for small plant, hand tools or gadgets, and it is a good idea for fishing, lifting, hanging, retrieving applications.
Depending on the type of metal some neodymium magnets would easily be able to exert enough force to adhere the eye bolts. You would just need to go with some of the larger ones. Just be careful because the attraction power of them can be intense.
https://www.amazon.com/Fishing-Countersunk-Diameter-Neodymium-Retrieving/dp/B07L89JVR7/ref=mp_s_a_1_1_sspa?keywords=large%2Bneodymium%2Bmagnets&qid=1559103987&s=gateway&sprefix=large%2Bneod&sr=8-1-spons&psc=1&th=1
748lbs of pull strength means once it's on there you might not be easily removing it though. Although it does meet your criteria haha.
This one is a bit more reasonable https://www.amazon.com/BIGTEDDY-Recovery-Neodymium-Countersunk-Magnetic/dp/B0764G7272/ref=mp_s_a_1_12?keywords=large+neodymium+magnets&qid=1559103987&s=gateway&sprefix=large+neod&sr=8-12
Now if the cladding is aluminum or real stainless then magnets won't do much. But that's an easy thing to test with a magnet off your fridge.