TowWorks 79631 Keyed Unique Hitch Lock — Extra-Long 3-1/4-Inch Pin for 2-Inch and 2-1/2-Inch Receivers

Overview

The TowWorks 79631 keyed unique trailer hitch lock is designed for dependable performance on Class III and Class IV hitches. It features an extra-long locking pin, measuring 3-1/4 inches of active length, purpose-built to fit both 2-inch and 2-1/2-inch receivers. Made from hardened steel and finished with a black e-coated coating, this lock balances strength with a compact, corrosion-resistant profile. Before purchasing, take a moment to confirm your hitch’s dimensions to ensure a precise fit that aligns with your setup.

Why this lock stands out

• Extra-long pin fits 2 inch and 2-1/2 inch receivers, offering versatile compatibility for a range of trailers and setups.
• Solid hardened steel construction combined with a durable black e-coated finish for better resistance to wear and the elements.
• Spring clip option provides additional safety, and can be used with or without the lock mechanism to suit your preference.
• Rubber O rings help minimize rattling and keep the pin steady, with adjustments available for different hitch tube sizes.
• Push lock design with two tubular keys makes locking and unlocking straightforward, and a watertight dust cap protects the mechanism from dust and moisture.
• Keyed unique system means each lock has its own keying set; if you need locks keyed alike, additional models are available.

How to use and fit guidance

• Install the pin into the hitch tube of your 2 inch or 2-1/2 inch receiver until it sits securely in place.
• Use the two included keys to operate the 1/4 turn push-lock mechanism for quick locking and unlocking.
• Insert the spring clip cotter pin when extra safety is desired, ensuring it stays in place during use.
• If you notice rattling, adjust the number of O rings or remove them to achieve a snug fit with your hitch brand.
• Keep the dust cap closed when the lock is not in use to minimize exposure to moisture and dirt.

Notes on compatibility and options

This model is sold as keyed unique, meaning each lock uses a distinct key. If you need multiple locks with the same key, check separate listings for keyed-alike options and use the corresponding product codes to match keys across locks.