TowWorks Trailer Hitch Lock Pin 5/8 in x 4.5 in Extra-Long — Keyed-Alike 3-Pack with Tubular Lock

The TowWorks 79833 is a keyed-alike, extra-long 5/8" trailer hitch locking pin with a 4½" span designed to secure adjustable hitches and 3" x 3" receivers.

This heavy-duty hitch pin kit provides a longer locking pin and multiple accessories to fit many channel-style adjustable hitches. It combines a push/quarter-turn tubular lock, rubber O-rings for noise reduction, a removable spring clip for quick changes, and a protective rubber cap to resist moisture and dirt. The set ships as three locks keyed alike with spare keys so you can use one key across multiple trailer connections.

Will this lock fit my adjustable channel hitch?

The 5/8" diameter pin with a 4-1/2" active span is intended for adjustable channel-style hitches and most 3" x 3" receivers. It specifically fits many CURT channel adjustable hitches and pintle hooks but is not compatible with some brands and smaller pin holes.

• Designed to fit CURT channel style adjustable hitches (models 45900, 45901, 45902) and pintle hooks (45907, 45908).
• Not compatible with FASTWAY adjustable hitches.
• Does not fit receivers requiring a 1/2" pin or bike racks with threaded connections.
• Always measure your hitch pin hole and span before purchasing to confirm compatibility.

How does the keyed-alike system and lock mechanism work?

Each pack contains three locking pins all keyed alike, so a single tubular key operates every lock in the kit. The lock uses a push-and-1/4-turn tubular mechanism for quick operation and includes a rubber dust cap to protect the cylinder from dirt and moisture.

• Three locking pins in the package, each with two tubular keys (six keys total).
• Push lock with a 1/4-turn action for fast lock/unlock cycles.
• Rubber dust cap helps keep the lock cylinder cleaner and drier.
• All units keyed alike for one-key convenience across multiple hitches.

What accessories are included and how do they help?

The kit includes small parts intended to improve fit, reduce noise, and provide an alternate quick-release option. These accessories let you tailor the pin to your receiver and reduce movement and rattling on the road.

• Separate spring clip (cotter pin) for quick hitch changes without the keyed lock; must be used when relying on that clip alone.
• Eight rubber O-rings to adjust for tube size and minimize rattling; add or remove rings as needed.
• One rubber cap to shield the lock from moisture and debris.
• Instruction manual to guide installation, O-ring adjustment, and clip usage.

Who is this for: The TowWorks 79833 kit is for trailer owners, haulers, and fleet users who need an extra-long, keyed-alike locking pin to secure adjustable channel-style hitches and 3" receivers. It’s especially useful for people with CURT channel hitches who want one key for multiple locks and those who value reduced hitch rattle and easy operation. If your setup requires a 1/2" pin, uses threaded bike-rack fittings, or is made by FASTWAY adjustable systems, choose a different model or confirm dimensions before buying.