
Cargo trailer door locks are an essential investment for any trailer owner, offering a high level of security and peace of mind.
A good cargo trailer door lock can prevent theft and damage to your trailer and its contents, which is why it's worth considering investing in a high-quality lock.
There are several types of cargo trailer door locks available, including padlocks, deadbolts, and electronic locks, each with its own unique features and benefits.
For example, a padlock can be easily installed and provides a high level of security, while a deadbolt lock offers added protection against forced entry.
Trailer Door Locks
If you're looking to secure your trailer doors, there are several options available. One option is the TL-10, a heavy-duty lock made of cast steel that can secure large cargo swing doors.
This lock is nearly impenetrable due to its cast steel construction. Its interior locking mechanism is also hidden from thieves, making it more difficult to break.
The TL-10 is designed to protect the keyhole and disks from elements, which is especially helpful for those who travel through freezing weather. This feature is a great addition to the lock's overall security.
You can also use the included 12" cable to tether the lock to your trailer, providing an extra layer of security. This is a thoughtful touch that shows the manufacturer has considered various scenarios.
The TL-10 is a solid choice for securing your trailer doors, but it's not the only option available. There are other locks on the market that offer similar features and benefits.
Here are some key features to consider when choosing a trailer door lock:
Overall, choosing the right trailer door lock can be a bit overwhelming, but by considering the features and benefits of each option, you can make an informed decision.
Lock Types
There are several types of locks that can be used on cargo trailer doors, each with its own unique features and benefits.
The most common type of lock is the pin tumbler lock, which is known for its simplicity and reliability.
A combination lock is another popular option, offering a high level of security with a unique keyless entry system.
Lever locks are also widely used, providing a convenient and easy-to-use locking mechanism.
TL-10 Lock
The TL-10 lock is a heavy-duty option for securing large cargo swing doors.
It's made of cast steel, making it nearly impenetrable to thieves. This lock is a great choice for those who transport valuable goods or equipment.
The TL-10 features a protective cap called the TL-10 cap that shields the keyhole and disks from elements that might travel upward and into the lock, especially helpful in freezing weather.
You can use the included 12" cable to tether the lock to your trailer, providing an extra layer of security.
Its interior locking mechanism is completely hidden from view, making it difficult for thieves to use bolt cutters to break the lock.
Cam-Action Lock
The Cam-Action Lock is a popular choice for securing trailer doors. It's a heavy-duty lock designed to withstand harsh weather conditions.
One of its key features is the TL-10 cap, which protects the keyhole and disks from elements that can travel upward and into the lock. This is especially helpful for those who travel through freezing weather.
The Cam-Action Lock is also available in different lengths, including 36 inches and 55 inches, making it suitable for various trailer sizes. It's made of zinc-plated steel, ensuring durability and resistance to corrosion.
This lock type is commonly used on enclosed trailers, providing an added layer of security. It's also worth noting that some Cam-Action Locks come with a hidden padlock, making it difficult for thieves to target.
Here are some key features of the Cam-Action Lock:
Overall, the Cam-Action Lock is a reliable and secure option for trailer doors. Its heavy-duty design and hidden locking mechanism make it an excellent choice for those who need to protect their cargo.
Components
Components of a cargo trailer door lock are crucial for securing your cargo. A typical lock consists of a latch, a lock body, and a handle.
The latch is usually a spring-loaded mechanism that holds the door closed. It's designed to withstand heavy use and harsh weather conditions.
A good lock body should be made of durable materials such as stainless steel or aluminum to resist corrosion. This ensures the lock remains functional even in extreme environments.
A comfortable handle is essential for easy operation, especially when you're in a hurry. Look for a handle with a secure grip to prevent it from slipping out of your hands.
Installation & Removal
The WAR-LOK Trailer Lock is designed to fit most standard trailer door latches. The lock hasp must be in good operating condition and not be excessively bent or deformed.
To install the lock, start by inserting and fastening a metal ball seal through the latch hasp. Hold the seal by the ball and gently pull it to the side.

Place the WAR-LOK Trailer Lock over the hasp latch assembly and push the lock cylinder upward until it clicks into place. This will secure the lock in position.
To remove the lock, simply insert the key into the lock cylinder and turn clockwise approximately 3/4 turn. The lock cylinder will spring extend to release the lock.
The Trailer Door Lock completely covers and protects the hasps of most trailers.
Handles
Handles are a crucial part of a system's overall functionality, and they come in various types to serve different purposes.
A handle can be a physical component, like a lever or a knob, that allows users to interact with a machine or device.
In mechanical systems, handles are often designed to provide a comfortable grip and to reduce fatigue.
Some handles are also adjustable, allowing users to customize their fit for optimal performance.
In contrast, non-adjustable handles are often used in applications where precision is key, such as in medical equipment.

Handles can also be made from a variety of materials, including metal, plastic, and rubber.
In high-temperature applications, handles may be made from heat-resistant materials like ceramic or silicone.
Handles can also be designed with safety features, such as locking mechanisms or ergonomic grips.
These features help prevent accidents and injuries, especially in industries where heavy machinery is involved.
Assemblies
Assemblies are an essential part of any trailer setup, and understanding their components can make a big difference in your experience.
The CAM Superline 1/2" Spring Latch Assembly is a great example of a reliable assembly that allows the latch to be locked in the open position. It features a 3-1/2" long handle and 1" of pin exposed when the pin is closed.
This assembly is designed to be used with trailers, and its spring-loaded mechanism provides a secure and convenient way to keep your trailer doors closed. Turning the lever allows the bolt to close under spring pressure, making it easy to secure your trailer.

The CAM Superline 3/4" Spring Latch Assembly is another option for trailers, offering similar features to the 1/2" version. It also has a 3-1/2" long handle and 1" of pin exposed when the pin is closed.
These assemblies are designed to be robust and reliable, making them a great choice for trailers that need to withstand heavy use.
Paddles
Paddles are a crucial component in various applications.
The Big Tex Locking Junior Size Paddle Latch comes with a plain finish. It includes two keys and has a cut out size of 2-5/8" x 3-11/16".
This latch does not have any mounting holes for a semi universal fit.
The Big Tex Locking Junior Size Paddle Latch is also available in stainless steel.
It has the same cut out size as the plain finish version and includes two keys.
Mounting holes are located on a 3-3/16" horizontal center and 3" vertical center.
The BRI-MAR Locking Pump Box Paddle Latch is a direct replacement for existing Bri-Mar pump box latches.
It includes two keys, but mounting hardware is not included.
Finger Pull Bolt

The Finger Pull Bolt is a practical component for many applications. It's available from Buyers Products, offering a reliable solution.
The #90M Finger Pull Bolt Latch from Buyers Products features a zinc-plated design. This provides corrosion resistance and a durable finish.
The angled end of the cam allows for simple locking. This design makes it easy to operate the latch.
The Finger Pull Bolt Latch is designed for unlocking with a pull latch. This makes it convenient to use in various settings.
Compression
Compression latches are a crucial component in many applications. They provide a secure and reliable way to keep things closed.
The Buyers Products Compression Latch #LL9000 is a great example of this. It has a black powder coated body and a chrome handle.
This latch comes with a 1/2" gasket, which helps to create a tight seal. This is important for keeping things closed and preventing air or water from leaking in.
The hidden studs on this latch are a clever feature. They add an extra layer of security and make it more difficult for the latch to be tampered with.
A lock with two keys is also included, providing an additional level of security.
Materials
Choosing the right materials for your cargo trailer door lock is crucial for its durability and effectiveness.
Steel is a popular choice for lock bodies due to its high strength-to-weight ratio, as seen in the discussion on "Lock Body Materials".
A rust-resistant coating is essential to protect the lock from the elements, which can be achieved with a powder coat or epoxy paint, as mentioned in the section on "Lock Finishing".
Zinc Plated
Zinc plating is a popular choice for hardware, and for good reason. It's durable and resistant to corrosion.
One example of zinc plating in action is the Zinc Plated 1/2" Spring Latch Assy, which has a 3-7/8" long handle. This handle is a convenient length for easy use.
The Zinc Plated Latch Only has a diameter of 1/2" and dimensions of 4-3/4" W x 4-3/4" L. Its compact size makes it perfect for smaller applications.
Zinc plating also offers a sleek and polished appearance, as seen in the Zinc Plated 1/2" Spring Latch Assy. This is a great option for those who want a finished look without the high cost of other materials.
The Zinc Plated Latch Only is a limited supply item, so be sure to grab one while they last. Stock# 1326653 is the reference number for this item.
Stainless Steel
Stainless steel is a corrosion-resistant alloy made from a combination of iron, chromium, and nickel.
It contains at least 10.5% chromium to provide its signature corrosion resistance.
Stainless steel is incredibly durable and can withstand scratches and wear and tear.
It's also resistant to acid and alkaline substances, making it a popular choice for chemical plants and food processing facilities.
Stainless steel is available in a wide range of grades, each with its own unique properties and applications.
Some grades, like 316 stainless steel, are highly resistant to corrosion and are often used in marine environments.
Others, like 410 stainless steel, are more prone to corrosion but are still widely used in applications where high strength is required.
Stainless steel is also a popular choice for kitchen utensils and cookware due to its non-reactive properties and ease of cleaning.
Brands
Thule is a well-known brand that offers high-quality cargo trailer door locks. Their locks are designed to provide maximum security and protection for your trailer.
Many brands offer a range of cargo trailer door locks, including some that are specifically designed for heavy-duty use. These locks can withstand harsh weather conditions and heavy use.
Bauer Trailers
Bauer Trailers are known for their heavy-duty locks, like the TL-10, which secures large cargo swing doors.
This lock is made of cast steel, making it nearly impenetrable to thieves. It has an interior locking mechanism that's completely hidden from view, preventing thieves from using bolt cutters.
Big Tex
Big Tex is a reputable brand that offers a range of locking latches for trailers and other applications. Their products are made from high-quality stainless steel.
One of the notable features of Big Tex's locking latches is the inclusion of two keys, which adds an extra layer of security. Their latches are designed to be durable and long-lasting.
Big Tex's locking latches are available in different sizes to fit various applications. The cut out size for their latches can range from 2-5/8" x 3-11/16" to 3-1/8" x 4-7/16".
Some of Big Tex's locking latches have an inside release mechanism, which allows the latch to be operated from the inside with a removable knob. This feature is particularly useful for applications where the latch needs to be accessed from the inside.

Here are some key features of Big Tex's locking latches:
Big Tex's locking latches are a great option for anyone looking for high-quality, secure latches for their trailers or other applications.
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