Yes, I searched this forum and found the size mentioned in several posts as M10x1.25 - this is incorrect, the bolt slipped right inside the hole. Local Nissan dealer has the tow hook kit with the bolts, but the bolt size isn't listed.
I am trying to get away with not spending $50 each for these frigging hooks. Rediculous. I have an industrial hardware shop locally that has awesome eye-nuts that I can buy slightly larger diameter than whatever bolt size I need, and then have two eyes for fastening a canoe to the roof. I WON'T BE USING THESE FOR RECOVERY POINTS! Just to secure a canoe. Anyone have any thoughts?