Proven Industries HL1 Hitch Pin Lock for 2" & 2-1/2" Receivers — Black, 5/8" Stainless Steel Pin, Tamper-Resistant Key

The Proven Industries HL1 Hitch Pin Lock is a heavy-duty stainless steel lock that secures 2" and 2-1/2" trailer receivers with a 5/8" pin and tamper-resistant key.

If you tow equipment, haul trailers, or leave a hitch-mounted accessory on your vehicle, adding a purpose-built hitch pin lock drastically reduces theft risk and gives you confidence when you park. The HL1 combines corrosion-resistant stainless steel, a watertight rubber cap, and a unique key mechanism so you can move between 2" and 2-1/2" receivers without changing hardware.

How does the HL1 Hitch Pin Lock keep my trailer hitch secure?

The HL1 uses a robust 5/8" stainless steel pin and a design that resists picking and tampering. Its unique key profile prevents common bumping or picking methods, and the lock sits fully inside the receiver to block unauthorized removal.

• 5/8" hardened stainless steel pin for strength and wear resistance
• Unique key design reduces the chance of picking
• Lock body fits flush inside 2" and 2-1/2" receivers to prevent leverage attacks

Will this fit my hitch and multiple receivers?

Yes — the HL1 is engineered to work with standard 2" and 2-1/2" trailer receivers. You can move it between those two receiver sizes without adapters, making it versatile for different trailers, tow vehicles, or accessories.

• Compatible with both 2" and 2-1/2" receiver sizes
• No extra shims or adapters required for common receiver dimensions
• Compact form factor makes it easy to store when not in use

How does it hold up against weather and road grime?

The HL1 is built to resist the elements. Stainless steel construction provides corrosion resistance, while a watertight rubber cap protects the keyway and pin from dirt, salt, and moisture that can impair function over time.

• Stainless steel body resists rust in wet conditions
• Watertight rubber cap shields the keyway from debris
• Durable finish reduces long-term wear from road salt and grime

What comes in the box and how do I use it?

The HL1 arrives ready to install with two matching keys and the lock preassembled. Slide the pin through the hitch receiver and secure the lock body; the key-operated cylinder keeps the pin captive until you unlock it.

• Includes HL1 hitch pin lock and two identical keys
• Simple install: insert pin, rotate lock into place, remove key
• Portable design for easy transfer between trailers or tow vehicles

Who this is for: The Proven Industries HL1 Hitch Pin Lock is ideal for truck owners, fleet managers, RV and trailer owners, and anyone who wants a reliable, low-profile theft-deterrent for hitch-mounted gear. If you need a weather-resistant, re-usable solution that fits both 2" and 2-1/2" receivers and values a tamper-resistant key, the HL1 is a practical choice.