Trimax TNL740 Spare Tyre Nut Lock — 1 Pack Side-Mount Locking Lug Nut, Tamper-Resistant & Corrosion-Resistant

Trimax TNL740 is a single-piece, tamper-resistant nut lock that secures side-mounted spare tires, offering quick installation and reliable theft deterrence.

If you keep a spare tire mounted on the side of your SUV, trailer, or work vehicle, an exposed lug nut can be an easy target for thieves or accidental loosening. The TRIMAX TNL740 Spare Tire Nut Lock is designed to replace one standard lug nut with a locking nut that resists unauthorized removal while remaining simple to fit using your vehicle's existing tools. It also doubles as a useful locking option for other cylindrical fittings such as propane tanks where an extra layer of protection is needed.

How does the TNL740 prevent spare tire theft?

The lock uses a tamper-resistant design that makes it difficult to remove with common hand tools. Its unique locking profile requires the included key or a matching socket, discouraging opportunistic theft and accidental loosening.

• Replaces one factory lug nut to block standard wrench removal
• Specialized locking pattern reduces access by common tools
• Heavy-duty metal construction resists bending and forced removal
• Limited lifetime warranty supports long-term use

Will it fit my side-mounted spare or other gear?

The TNL740 is engineered for broad compatibility with most side-mount spare tire setups on SUVs, trailers, and work trucks. Its universal sizing and threaded design make it a practical, multiuse security choice beyond tires.

• Designed to fit the majority of side-mounted spare tire studs
• Works as a locking nut for propane tanks and similar fittings
• Compact form factor preserves clearance around the wheel and mount
• One-pack solution — add supplemental locks if multiple nuts need protection

How simple is installation and daily use?

Installation is straightforward and can be completed in minutes using common tools; no drilling or vehicle modifications are required. The lock installs like a standard lug nut and unlocks with its matching key when service or tire changes are needed.

• Installs with a standard socket or the provided key in minutes
• No special adapters or permanent changes to the vehicle
• Removable for maintenance or tire replacement using the included key
• Low-profile design keeps access for other lug nuts intact

What should I expect for durability and warranty?

Trimax builds the TNL740 from corrosion-resistant metal to withstand outdoor exposure and road conditions. The product is backed by a limited lifetime warranty, giving buyers added confidence in long-term performance.

• Corrosion-resistant finish protects against rust and road salt
• Robust metal construction resists forced removal attempts
• Limited lifetime warranty for manufacturer-supported durability
• Simple replacement path if defects are reported under warranty terms

Who is this for? The TRIMAX TNL740 is ideal for vehicle owners who store a spare tire on an external side mount and want a low-cost, non-invasive way to reduce theft risk. It also suits trailer owners, tradespeople, and RV users who may want to secure propane tanks or other threaded fittings with one compact locking nut. If you prefer a quick-install security upgrade that doesn’t require modifying mounting hardware, the TNL740 delivers a practical balance of usability, compatibility, and protection.