When it comes to towing, strength and reliability are non-negotiable. If you’re pulling a heavy-duty trailer, you need a hitch pin that’s built to handle the job. The CURT Heavy-Duty 5/8" Hitch Pin with Groove is engineered to secure large receiver hitches with confidence, making it an essential accessory for anyone hauling serious loads. Designed for 3" x 3" receiver tubes with a 5/8" pin hole, this pin is the perfect solution for work trucks, equipment haulers, RVs, and other heavy-duty towing setups.
With a tested rating of 21,000 lbs. GTW, this hitch pin is built for the toughest towing applications. Constructed from high-strength steel and finished with a protective zinc-plated coating, it offers long-lasting durability and corrosion resistance—even when exposed to rain, mud, and road salt. The extra-long 5/8" diameter pin ensures a secure fit in larger receiver tubes, while the grooved tip allows the included retainer clip to be attached from any angle for quick, hassle-free setup.
A bent handle design makes the pin easy to grip and maneuver, even with gloves on, giving you convenience and security in one simple component. With this heavy-duty hitch pin, you’ll have the peace of mind knowing your ball mounts and towing accessories are securely locked in place.
Key Features
- 21,000 lbs. GTW Rating – Rigorously tested for strength to handle the heaviest of trailers.
- Durable Zinc-Plated Finish – Resists rust and corrosion for long-lasting performance.
- Grooved Tip with Retainer Clip – Allows clip attachment from any angle for quick and secure fastening.
- Bent Handle Design – Provides an easier grip for fast installation and removal.
Additional Benefits
- Fits 3" x 3" receiver tubes with a 5/8" pin hole.
- Secures ball mounts, cargo carriers, or any other receiver-mounted accessory.
- Includes retainer clip for complete installation right out of the package.
- Designed and tested in the USA for dependable towing performance.
- Backed by a limited lifetime warranty (one year finish, one year parts).
Terms to Know
- GTW (Gross Trailer Weight): The maximum weight a trailer can safely weigh when fully loaded.
- Receiver Tube: The square opening on a trailer hitch where ball mounts or hitch-mounted accessories are inserted.
- 5/8" Pin Hole: A standard size hole on heavy-duty receivers that matches the hitch pin diameter.
- Grooved Pin: A hitch pin with a machined groove at the tip, allowing the retainer clip to lock into place securely.
The Curt Heavy-Duty 5/8" Hitch Pin with Groove – Zinc is built for truck owners, RV enthusiasts, and contractors who demand unmatched towing strength and durability. With its heavy-duty rating, easy-to-use design, and corrosion-resistant finish, this hitch pin ensures that your towing setup is as secure as it is strong. Whether you’re hauling equipment, towing a camper, or pulling a large trailer, CURT gives you the confidence to tow safely and efficiently.