5/8in Hitch Pin Lock

The 5/8in Hitch Pin Lock by REESE is a heavy-duty security solution designed for anyone who relies on trailer hitch systems for towing. Whether you're a contractor managing job-site equipment, a fleet operator, or a vehicle enthusiast who regularly transports valuable cargo, this pin lock prevents unauthorized trailer disconnection and theft. As a mechanic and automotive professional, I've seen firsthand how a quality hitch pin lock is a non-negotiable investment—especially when you're towing expensive equipment or high-value loads across multiple locations.

Constructed from solid steel in natural finish, this 5/8-inch diameter lock is engineered to fit standard Class II and Class III hitch receivers with 5/8-inch pin holes. The design is straightforward but effective: the hardened steel construction resists cutting and prying, while the keyed mechanism provides reliable retention without adding bulk or weight to your towing setup. At just over 1 pound, this lock delivers serious security in a compact 2.85 x 1.65 x 9.1-inch footprint—small enough to stow in a glove box yet robust enough to deter opportunistic theft and accidental trailer separation during road vibration.

This hitch pin lock is ideal for pickup truck owners, RV operators, and commercial haulers who need peace of mind on the road. Installation is immediate—simply insert the lock through your existing hitch pin hole and secure with the included key. REESE's reputation for reliable towing hardware makes this an excellent choice for anyone seeking OEM-grade security without the dealer markup. Compatible with most standard 5/8-inch hitch pin applications, it's a quick upgrade that transforms any trailer setup from vulnerable to protected.