Vehiclex Heavy-Duty Trailer Hitch Pin Lock 5/8" — 4-5/8" Span, Tubular Key & Anti-Rattle

Vehiclex Heavy-Duty Trailer Hitch Pin Lock is a hardened 5/8" locking pin with a 4-5/8" effective span and unique tubular key, built to secure Class IV and V 3" and 3.5" receivers against theft and rattle.

Designed for larger trailers, RVs, cargo carriers and boat haulers, this Vehiclex locking hitch pin combines robust materials, an anti-rattle fit and a protected tubular key system. The lock is made from hardened carbon steel and finished with black electrophoretic paint for long-lasting corrosion resistance. Its 4-5/8" effective span fits common 3" and 3.5" receiver openings while the included rubber components and key cover reduce noise and keep the mechanism protected from the elements.

How does this lock fit 3" and 3.5" hitch receivers?

The Vehiclex pin is sized to span the receiver opening with a 4-5/8" effective length, giving compatible engagement in both 3" and 3.5" receiver setups. Its 5/8" diameter matches heavy-duty hitch standards for Class IV and V applications.

• 4-5/8" effective span suits 3" and 3.5" receivers
• 5/8" pin diameter meets heavy-duty hitch specs
• Works with ball mounts, cargo carriers and tow attachments

What makes the locking mechanism more secure?

Security comes from the exclusive tubular key lock and hardened pin construction. The tubular key profile is less common than flat keys, reducing the chance of casual duplication and making forced entry more difficult.

• Unique tubular key system included with two matching keys
• Hardened carbon steel resists cutting and bending
• Rubber key slot cover prevents debris and moisture from impairing operation

Will this stop rattling and stand up to weather?

The Vehiclex lock includes anti-rattle hardware and a protective finish to minimize noise and corrosion. Five rubber O-rings are supplied to compress against the receiver and eliminate play while the black electrophoretic coating helps block rust in wet or salty conditions.

• Five rubber O-rings to absorb shock and eliminate movement
• Electrophoretic paint finish helps prevent corrosion
• Rubber cap over key slot keeps grit out for reliable use

How easy is it to use and maintain?

Operation is straightforward: insert the pin through the hitch and trailer mount, then lock with the tubular key. Occasional cleaning of the key slot and light lubrication will keep the mechanism smooth for years.

• Comes with two unique tubular keys for convenience
• Simple drop-in installation without special tools
• Low maintenance—wipe clean and apply lubricant if needed

Who this is for: The Vehiclex Heavy-Duty Trailer Hitch Pin Lock is intended for drivers who tow larger loads—owners of trucks, tow vehicles, RVs, boat trailers, and cargo carriers—who want a robust, low-profile locking solution that reduces theft risk and rattling noise. It's a practical choice for professionals and recreational users who need a durable, weather-resistant lock that fits common Class IV and V receiver setups.