Mailbox Threshers at Thirard

What is a Mailbox Thresher Lock?

A mailbox thresher, also known as a mailbox tumbler lock or mailbox cylinder, is a specialized lock that stands out for its unique locking method. Typically featuring a single closing point, it is a single-point lock with a straightforward mechanism. These locks are primarily used for mailboxes but can also secure meters, technical rooms, and certain types of furniture.

Versatile and Accessible

The key feature of mailbox threshers is their ability to lock effectively while allowing authorized personnel, such as postal workers, utility agents, and emergency responders, easy access. This makes them ideal for situations requiring quick and simple access.

How Does a Mailbox Thresher Lock Work?

A mailbox thresher resembles a small round cylinder, usually 12 or 13 mm in diameter, with a small notched security key. Here’s how it functions:

• Key Mechanism: The key operates the pivot bolt or half-turn bolt.
• Single Entry: It has a single entry point, opening only from the outside.
• Mounting Options: It can be surface-mounted or recessed into the mailbox door.

Changing Your Mailbox Lock

Disassemble the Old Lock

The most challenging part of changing a mailbox lock is disassembling the old one, especially if the key is lost. Here are your options:

1. Call a Locksmith: Professional assistance can quickly resolve the issue.
2. Force Open: Try using another key and force the lock.
3. Ask the Postman: In apartment buildings, the postman might open all mailboxes, granting you access to remove your lock.
4. Drill the Cylinder: If all else fails, drill the cylinder at the key imprint and use a screwdriver to force the lock.

Once the mailbox is open, remove the lock by unscrewing the nut.

Install a New Lock

With the old lock removed, install a new one by securing it with a nut. Ensure the new barrel matches the previous one in size and specifications.

Recognizing a PTT Lock

PTT locks are easily identifiable by their round barrel head. In buildings, PTT threshers are typically located on the general opening of the mailbox block. Some locks may also feature the words “Approved by the Post Office.”

Practical Use Cases

Mailbox thresher locks are perfect for:

• Emergency Accessibility: Quick access for postal workers, utility agents, and emergency responders.
• Simple Installation: Easy to install and use, making them convenient for various applications.

Security Considerations

While mailbox thresher locks are not designed to provide high security, their primary purpose is to offer convenient access. They are suitable for low-security applications where ease of access is more important than preventing unauthorized entry.

At Thirard, we offer a range of mailbox thresher locks that combine simplicity with functionality. Whether you need a lock for your mailbox, a meter, or specific furniture, our selection ensures you find the perfect solution. Explore our comprehensive range of high-quality locks, including door locks, lock boxes, sliding door locks, cabinet locks, and more. Secure your property with confidence, knowing Thirard provides reliable and accessible locking solutions tailored to your needs.