CURT Trailer Hitch Pin 5/8-Inch — Black Zinc, 105° Bent Handle for 2" Receiver

CURT 21579 is a 5/8-inch solid-steel trailer hitch pin with a black zinc finish and included clip, built to securely fasten ball mounts and accessories in 2-inch receivers.

When towing, the small parts determine safety and convenience. This CURT hitch pin combines heavy-duty construction with a thoughtful 105-degree bend for gripping, plus a corrosion-resistant black zinc coating. It’s designed to work with class 3, 4 and 5 hitches and fits any accessory featuring a 2-inch shank and a 5/8-inch pin hole. The package includes the matching retainer clip for immediate installation.

How does this hitch pin make installing a ball mount easier?

The 105-degree bend forms a practical handle so you can insert and remove the pin without struggling with awkward angles or greasy gloves. The handle also helps the pin stay fully engaged under vibration, decreasing the chance of it shifting loose while driving.

• Angled 105° bend provides a positive grip for one-handed use.
• Smooth, rounded handle reduces snagging on clothing or cargo.
• Standard retainer hole accepts the included clip—no extra parts needed.

Will this pin resist rust and wear on long trips?

The black zinc plating offers a protective layer against moisture and road contaminants, extending the life of the pin and helping it slide smoothly in and out of the receiver. While not maintenance-free, periodic cleaning and light lubrication keep performance reliable over many seasons.

• Black zinc finish minimizes corrosion for longer service life.
• Smooth surface reduces friction and wear on the receiver bore.
• Easy to inspect visually for surface damage or corrosion.

Is this pin compatible with my hitch and accessories?

This model is sized for 5/8-inch pin holes and made to fit standard 2-inch shank ball mounts and hitch-mounted accessories. It’s a common size for class 3–5 towing setups, so it works with most medium- and heavy-duty towing rigs.

• 5/8" diameter matches typical receiver pin holes.
• Designed for 2" shank accessories like ball mounts and cargo carriers.
• Appropriate for class 3, 4 and 5 receiver-equipped vehicles.

What safety and strength features should I expect?

Constructed from solid steel, the CURT 21579 provides reliable shear strength and roadworthiness when paired with correctly rated hitch components. The included clip secures the pin in place to prevent unintended disengagement during travel.

• Solid-steel construction for dependable tensile and shear resistance.
• Included retainer clip locks the pin into the receiver hole.
• Simple, proven design minimizes failure points compared with multi-piece locks.

Who is this for? If you tow a trailer, boat, camper or carry heavy hitch-mounted accessories and need a no-nonsense, heavy-duty pin that fits a 2" receiver, this CURT 21579 hitch pin is a practical choice. It’s aimed at drivers who prefer durable, easy-to-use hardware—professional contractors, weekend boaters, RV owners and anyone upgrading worn or corroded pins for safer towing.