CURT Trailer Hitch Ball 1-7/8" Chrome, 3,500 lb Capacity — Hot-Forged Steel, 1" x 2-1/8" Shank

CURT 40002 is a chrome-plated 1-7/8-inch trailer hitch ball rated for 3,500 lb gross trailer weight with a 1" x 2-1/8" shank for secure, vehicle-compatible towing.

If you tow small trailers, boats, campers or utility loads, the right ball diameter and a strong shank are essential for a safe connection. The CURT 40002 is built from hot-forged steel, finished in corrosion-resistant chrome, and engineered with fine threads and included hardware so the ball mounts solidly to compatible ball mounts and class 1 or class 2 hitches.

What makes this CURT ball suitable for light towing duties?

The 1-7/8" ball diameter matches standard small couplers, and the unit’s 3,500 lb rating covers most utility and small recreational trailers. Hot-forged steel construction provides the core strength needed for everyday towing, while VESC testing ensures the part meets U.S. safety specifications.

• Ball diameter: 1-7/8" — fits matching couplers precisely
• Maximum gross trailer weight: 3,500 lb
• Material: hot-forged steel for consistent strength
• Compliance: manufactured to U.S. VESC standards

How does the shank and hardware secure the ball to my ball mount?

This model uses a 1" diameter shank that measures 2-1/8" long to pass cleanly through most ball mount plates. Fine threads on the shank increase thread engagement and holding strength; CURT supplies a zinc-plated hex nut and a helical lock washer to resist loosening under load.

• Shank size: 1" diameter by 2-1/8" length to fit standard mounts
• Threads: fine-threaded shank for improved clamp force
• Included hardware: zinc-plated hex nut and helical lock washer
• Recommended torque: tighten to 250 lb-ft for secure installation

Will the chrome finish hold up to weather and road use?

The CURT 40002 is coated with a nickel-chrome finish to reduce corrosion and surface wear during regular use. While the plating helps resist rain, dirt and road grime, routine inspection and basic maintenance—cleaning and re-torquing—extend the service life.

• Finish: durable nickel-chrome plating for corrosion resistance
• Maintenance: wipe clean and check torque periodically
• Durability: designed for everyday towing environments

How do I verify compatibility with my towing setup?

Confirm the coupler on your trailer matches a 1-7/8" ball diameter and that the ball mount and hitch are rated for at least 3,500 lb. Always compare the lowest rated component in your towing chain—vehicle, hitch, ball mount, ball and trailer—before towing.

• Match coupler size: requires 1-7/8" coupler
• Check ratings: do not exceed the lowest component’s capacity
• Installation tip: use specified torque and included lock washer for secure fit

Who is this for? The CURT 40002 is intended for drivers who tow smaller trailers, including light utility trailers, small boat trailers, compact campers and some recreational units, and who want a dependable, precision-fit hitch ball. It’s a practical choice for owners of class 1 or class 2 hitches who need a corrosion-resistant, professionally tested ball that installs with common ball-mount hardware.