Block access to connect to your trailer, so someone can't drive away with it. These locks are useful when storing a trailer or making sure it can’t be moved while it’s being loaded and unloaded. Made from a solid block of iron, these locks not only cover the entire kingpin so no one can connect to it, but once they're on, they're extremely difficult to twist or pry off. To make them difficult to pick, these locks use rotating discs—like tumblers in a safe—instead of traditional springs and pins. The lock is also recessed, only adding to its protection against attempts to force them open. They include two keys that may only be duplicated by the manufacturer.

Use the handle to help position these locks as you install and remove them.

Choose keyed differently locks if you need locks that each open with a different key.

Choose keyed alike locks if you need several locks that open with the same key.

For technical drawings and 3-D models, click on a part number.