TowWorks Trailer Hitch Lock Set — Keyed-Alike 5/8" Extra-Long 3-1/4" Span, 2-Pack with Push-Lock & O-Rings

TowWorks 79632 is a keyed-alike, extra-long 5/8" diameter trailer hitch locking pin set designed to secure Class III and IV 2" and 2.5" receivers with a 3-1/4" active span.

This heavy-duty two-pack combines an extended-length locking pin, a backup spring clip (cotter pin), and rubber O-rings to reduce movement and noise. Each unit is keyed alike and comes with four tubular-style keys, a watertight dust cap over the lock core, and a push-lock mechanism for fast, one-handed operation. Before buying, check your hitch dimensions and compatibility notes — this design isn't compatible with certain adjustable hitch systems and pintle kits.

Will the TowWorks 79632 fit my hitch receiver?

The 5/8" pin diameter and maximum 3-1/4" active span accommodate most Class III and IV 2" and 2.5" receiver tubes. However, some channel-style adjustable hitches and specific hitch brands use different dimensions or profiles and will not accept this pin.

• Fits 2" and 2.5" trailer receivers with up to 3-1/4" span.
• Measure your receiver and ball-mount before purchase to confirm fit.
• Not compatible with CURT adjustable channel hitches or select adjustable pintle/Andersen/FASTWAY kits.

How does the locking mechanism work and how easy is it to use?

The lock uses a push-lock design with a tubular keyed-alike cylinder for quick engagement and a 1/4-turn action to secure or release. A rubber dust cap keeps moisture and grit away from the lock internals to prolong reliable operation in outdoor conditions.

• Push-lock with 1/4-turn tubular key cylinder for intuitive locking/unlocking.
• Four keys included per package; both locks are keyed alike for convenience.
• Watertight dust rubber cap reduces corrosion risk to the lock core.

What security and anti-noise features are included?

Security is provided by the solid steel 5/8" pin and keyed cylinder; an included spring clip (cotter pin) offers redundancy — you can use the clip alone or with the locking mechanism. Rubber O-rings are set up to eliminate rattling between the pin and receiver, helping protect connections and reduce distracting noise during travel.

• Spring clip (cotter pin) adds a non-locking backup safety option.
• Rubber O-rings prevent movement and reduce road noise and wear.
• Solid 5/8" steel diameter resists shear and tampering better than smaller pins.

What comes in the box and are there keyed-alike options for more locks?

The package contains two locking hitch pins, four identical tubular keys keyed alike across both pins, rubber O-rings, and spring clips for extra safety. TowWorks offers other SKUs if you need three or four locks keyed alike; you can also combine packages to extend the same key across more locks.

• Two keyed-alike locks per package, four keys total.
• Includes rubber O-rings and spring clips for each pin.
• Look for TowWorks 79633 for three-keyed-alike or 79634 for four keyed-alike units.

Who is this for: The TowWorks 79632 set is aimed at caravan owners, truck and SUV drivers, landscapers and fleet managers who need a longer locking pin for 2" or 2.5" Class III/IV receivers. It's a solid choice when you want a keyed-alike two-pack with anti-rattle features and a backup cotter pin, provided your hitch is compatible with the specified dimensions.