I bought these because I didn't want my new Dexter 5200lb trailer axle bolts to rust like the old 3500lb axles. New axles come with open ended nuts that are half the length. Correct quantity of jam nuts (24) received in good condition, no sizing or threading issues. Cosmetically they look good - box was dated 29th June 2020 (purchased November 2020). Installs seamlessly (no peeling/chalking chrome) with up to 110 lb/ft of manual torque. I doubt they'll ever be exposed to salt, but stay outside and let you know if rust appears.