TowWorks Trailer Hitch Lock 5/8" Keyed-Alike 4.5" Span — 2-Pack, Anti-Rattle Weatherproof

TowWorks 79832 is an extra-long, keyed-alike trailer hitch locking pin designed to secure most adjustable 3" receiver hitches with a 5/8" diameter and a 4-1/2" span.

This two-pack of keyed-alike hitch locks combines a long locking pin, weather protection, and anti-rattle features so you can lock adjustable hitches and channel-style pintle mounts confidently. Constructed from steel and zinc alloy with rubber seals, the set includes two locks that operate with four identical tubular keys, a separate spring clip for quick use, multiple rubber O-rings to eliminate noise, and a protective cap over the key mechanism.

Will this hitch lock fit my adjustable 3" receiver or channel-style hitch?

Measure your hitch receiver and compare to the lock’s dimensions before buying: the TowWorks 79832 has a 5/8" diameter pin and an active span of 4-1/2", engineered for many channel-style adjustable hitches and 3" x 3" receivers. It is compatible with specific CURT channel hitches and pintle hooks but does not fit all brands or pin sizes.

• Pin diameter: 5/8" (0.625 inch)
• Active span/maximum length: 4-1/2"
• Compatible examples: CURT channel hitches 45900, 45901, 45902; pintle hooks 45907, 45908
• Not compatible with FASTWAY adjustable hitches, 1/2" pin holes, or threaded bike-rack connections

How does the lock reduce rattling and resist weather?

The TowWorks lock includes rubber O-rings that you can add or remove to get a snug fit and stop movement inside the receiver tube. A rubber dust cap seals the keyway to keep moisture and dirt from entering the locking mechanism, helping maintain smooth operation over time.

• Eight rubber O-rings included for noise control and fit adjustments
• Rubber cap protects the key cylinder from moisture and debris
• Zinc alloy and steel construction for corrosion resistance
• Push-lock and 1/4-turn tubular key operation for quick use

What safety and convenience features are included?

The set ships with a separate spring clip (cotter pin) so you can secure the hitch quickly without using the keyed lock or as a backup if needed. All locks in the pack are keyed alike, so a single key pattern opens both units for easier fleet or multi-vehicle use.

• Two locking pins in the package, plus four tubular keys (all keyed alike)
• Separate spring clip provides an alternate quick-secure option
• Push-lock design enables fast installation and removal
• Instruction manual included for correct installation and clip usage

How should I verify fit before purchasing?

Confirm the receiver tube internal diameter and the hitch’s pin hole size against the lock’s specifications. If your hitch uses a 1/2" pin hole, threaded bike-rack connections, or a FASTWAY adjustable design, this lock will not fit.

• Measure your hitch’s pin hole diameter and receiver internal space
• Compare with 5/8" pin and 4-1/2" span requirements
• Check compatibility list for CURT channel models and pintle hooks
• Adjust or remove O-rings to fine-tune fit if necessary

Who is this for: TowWorks 79832 suits owners of trailers, tow vehicles, and adjustable channel-style hitches who need a longer locking pin for 3" receivers or adjustable pintle setups. It’s useful for fleets, RV owners, and anyone wanting two keyed-alike locks for multiple trailers or vehicles. Before ordering, verify your hitch measurements and model compatibility so the extra-long 5/8" pin fits correctly and secures your setup without drilling or modification.