What bolts and fasteners do I need to secure this to my hitch?

Fasteners are not included — you'll need bolts, washers, and lock nuts rated for your hitch receiver. Check your vehicle's hitch manual or contact a local shop to confirm the correct bolt size and torque spec.

Will this step be slippery in rain or mud?

Stainless steel is naturally smoother than textured coatings, so wet conditions will require caution. Consider adding grip tape or a non-slip adhesive coating if you're in a wet climate or use your truck regularly in muddy terrain.

Does stainless steel stay shiny, or will it oxidize over time?

Marine-grade stainless resists corrosion far better than standard steel, but surface oxidation and discoloration can occur with heavy salt exposure. Rinse periodically and it'll maintain appearance; occasional stainless polish will restore shine if needed.