Master Lock Trailer Coupler Lock

Park your trailer with peace of mind. The Master Lock 605DAT Trailer Coupler Lock drops into a 2 in coupler ball socket and locks it shut — no thief can lift the latch and roll your trailer away. The brass body and 3/4 in shackle resist rust and corrosion through years of outdoor exposure, and the keyed mechanism stays smooth even after a winter sitting in a snowbank.Why Trailer Owners Pick This Lock Fits standard 2 in coupler ball sockets — the most common size on utility, boat, and small enclosed trailers Solid brass body resists rust and corrosion in outdoor and marine environments 3/4 in (19 mm) hardened-steel shackle bites back against bolt cutters and pry attacks Drops into the latch position when the coupler is open — no separate bracket to install Includes two keys with a unique key code — replacements available through Master Lock Weather-resistant cylinder stays smooth in rain, snow, and freeze-thaw cycles Where It Shines Utility, landscape, and contractor trailers parked overnight on jobsites Boat trailers at marina lots and ramps RV and travel-trailer storage between trips Cargo trailers in driveways and storage yards Specifications Model: 605DAT Coupler size: 2 in (50.8 mm) ball socket Body material: Solid brass Shackle: 3/4 in (19 mm) hardened steel Keying: Keyed (two keys included) Use: Outdoor / weather-resistant Approximate weight: 1 lb Stop by Garoppo’s to pick one up, or schedule local delivery within our service area.