TowWorks 79830 Trailer Hitch Lock – 5/8" Keyed-Alike Pin, Extra-Long 4.5" Span, Anti-Rattle

If you use adjustable trailer hitches or pintle hooks that require a longer locking pin, this TowWorks 79830 model gives you extra reach while delivering keyed-alike convenience and vibration reduction. It’s built to work with many CURT-style channel adjustable hitches and most 3" receivers, and includes a removable spring cotter clip option for added redundancy. The push-lock tubular key system and rubber dust cap protect the locking mechanism from corrosion and debris.

How long is the pin and which adjustable hitches does it fit?

The pin is a 5/8" diameter locking shaft with 4-1/2" of usable span, intended for adjustable channel-style hitches and several adjustable pintle hooks. It’s specifically compatible with many CURT channel hitches but is not suitable for FASTWAY adjustable models. Always measure your hitch tube and channel before purchasing.

• Pin diameter: 5/8"; active length: 4-1/2"
• Designed for CURT channel-style adjustable hitches (examples: 45900–45902) and some pintle hooks
• Not compatible with FASTWAY adjustable hitches
• Measure your hitch tube and channel to confirm fit

What security and anti-rattle features are included?

This pin combines a tubular push-lock keyed-alike cylinder with rubber O-rings to minimize movement and noise. It ships with two identical tubular keys and a watertight dust cap to help prevent internal corrosion, plus a separate spring cotter clip for backup retention when needed.

• Two tubular keys included per lock; 1/4-turn push-lock operation
• Rubber O-rings to reduce rattling and hold the pin steady
• Watertight rubber dust cap protects the lock core from moisture and debris
• Spring cotter clip (cotter pin) provides secondary retention option

Can I get more than one lock keyed alike for multiple attachment points?

Yes — each TowWorks 79830 unit ships keyed alike within the quantity you order, so multiple locks purchased together will share the same key. The product line also includes specific SKUs for fixed numbers of keyed-alike locks if you need pairs or triples without mixing keying sets.

• Each 79830 item ordered will be keyed alike
• Alternate SKUs available for 2, 3, or larger keyed-alike sets (see product listings)
• To get four or more keyed-alike locks, combine the listed keyed sets as directed
• Keep your key code or label your keys to simplify replacement

How should I install and maintain this hitch lock for best performance?

Insert the pin through your hitch tube and channel, seat the rubber O-rings to remove play, and engage the tubular push-lock; then use the spring cotter clip for added physical backup if desired. Periodically remove the dust cap and lightly lubricate the lock core and inspect O-rings for wear to ensure smooth operation and long life.

• Seat O-rings to eliminate rattle; adjust quantity if needed for snug fit
• Use included spring cotter clip for extra safety when in heavy use
• Protect lock with rubber dust cap; apply light lubricant to the core now and then
• Verify dimensions before purchase to prevent fit issues

Who is this for? TowWorks 79830 suits vehicle owners, fleet operators, and towing professionals who require an extended-length, keyed-alike locking pin for adjustable channel hitches or pintle hooks on 3" receivers. If you need a durable, low-noise locking solution with a keyed-alike option and backup retention, this pin is designed to fit that use — but check your hitch model and measurements first to ensure compatibility.