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Hardened lock keys are an essential part of any key-operated lock system. They are designed to provide a higher level of security and durability compared to standard keys. Hardened locks and keys are made from high-carbon steel or other hardened materials, making them resistant to cutting, picking, and other forms of unauthorized access. There are several types of hardened lock keys, each with unique features and advantages.
Cylinder Keys
Hardened steel cylinder keys are widely used in most locks and security systems. The key's flat, rectangular profile has cut grooves corresponding to the lock's pin tumblers. When inserted, it aligns the pins to the shear line, allowing the lock to turn. This standard design balances security, manufacturing cost, and ease of use. Many hardened cylinder keys come with additional features like anti-pick pins or sidebars for extra security against picking attacks.
Disc Detainer Keys
Disc detainer keys operate locks with rotating discs instead of pin tumblers. The key has a unique shape with raised and recessed sections that interact with the discs inside the lock. When inserted, it rotates and sets all the discs at the correct distance from the centre hub, allowing the lock to turn. This design provides a higher security level since picking requires precise manipulation of all the discs simultaneously.
Lever Keys
Lever keys operate locks with multiple levers instead of pins or discs. The key has a flat, elongated body with notches that interact with the levers inside the lock. When inserted, it raises and moves all the levers to the correct position, allowing the lock to turn. This design offers a high level of security since lever locks are more resistant to picking and other forms of unauthorized access.
Wafer Keys
Hardened steel wafer locks and keys are commonly used in low-security applications such as lockers, furniture, and interior doors. The key has a flat body with a series of wafers that slide into a corresponding lock slot. When inserted, the wafers align the internal components of the lock, allowing it to open. This simple design makes wafer keys affordable and easy to manufacture, but it also makes them vulnerable to unauthorized access methods like shimmying or sliding.
Keyless Locks
Hardened keyless electric locks combine hardened steel construction with advanced electronic technology for high security. These locks are operated by entering a code on a keypad, scanning a fingerprint, or using a smart card. The electronic system controls the movement of hardened steel bolts or bars that secure the lock. Keyless locks provide high security since they are difficult to bypass without the correct code or credentials, and they can be reprogrammed or reconfigured as needed.
When buying keys, the key's specifications must meet the user's needs. Here are some hardened lock key specifications to look out for:
Material
The material used to make a hardened key greatly affects its durability. Most hardened keys are made of hardened steel. This is because hardened steel is very strong and won't easily break or snap. Keys made from other metals like brass won't be as durable.
Length and Width
Hardened keys come in different lengths and widths. The size of the keyways or locks determines what size key to use. A key too long or wide won't fit in the lock. Most hardened keys are between 2 to 6 inches long and 1/8 to 1/4 inches wide.
Cut Depth and Spacing
The cuts on a hardened key are very important for how well it works. The depth and spacing of the cuts must match exactly with the lock's pins. A key with wrong measurements won't open the lock. The cut depth is usually between 0.020 to 0.080 inches. The spacing between cuts is typically 0.090 to 0.150 inches.
Number of Cuts
The number of cuts on a hardened key also affects its security level. More cuts mean the key has a more complex design. This makes it harder for thieves to duplicate or pick the key. Most hardened keys have between 5 to 10 cuts.
Key Material Treatment
The hardened lock key material treatment affects how well it stands up to wear and tear. Keys with heat treatment are the most resilient. The heat treatment process strengthens the steel and makes the key tougher.
To keep keys working well, they need proper maintenance. Here are some hardened lock key maintenance tips:
Regular Cleaning
Keys should be cleaned often to remove dirt, dust and grime that builds up. An old toothbrush or soft brush works well for cleaning. A damp cloth or paper towel will do the wiping. Cleaning prevents the buildup from causing the key to stick.
Lubrication
Lubrication is important for keeping keys turning smoothly in locks. A few drops of lubricant like graphite or silicone spray should be applied on the key. The lubricant helps the key slide easily and prevents it from jamming.
Avoid Excessive Force
Using too much strength to turn a key can damage it over time. Keys should only be turned gently in the lock. Forcing keys can cause bends, breaks or the cuts to wear unevenly.
Proper Storage
When not being used, keys should be stored in a safe, dry place. Humidity or extreme temperatures can affect the key's material. Storing keys in a protective case prevents them from getting lost or damaged.
When choosing a hardened lock key, people need to consider several factors to ensure they meet their needs and provide the desired level of security. Here are some factors to consider when choosing a hardened lock key:
By considering these factors, people can choose a hardened lock key that meets their security needs, is durable, and is compatible with the locks they use.
Here are some general steps to replace a hardened lock key:
Identify the lock type
Find out what kind of lock is in use. Determine if it is a pin tumbler lock, wafer lock, disc detainer lock, or any other. Identify the lock type because different locks have different key cutting specifications.
Obtain a key blank
Get a key blank that matches the lock type and size. It is important to use a key blank that is designed for the specific lock type, as different locks require different key shapes.
Cut the new key
Use a key cutting machine to cut the new key. Place the old key (the one that is hardened) and the key blank (the new key) on the key cutting machine. Cut the new key to match the bittings (the raised parts) of the old key.
Test the new key
Test the new key in the lock to ensure it works smoothly. If the new key does not work properly, use a file or key cutting machine to make further adjustments until it fits the lock correctly.
Check for security
After replacing the key, make sure the lock still has the same level of security. If necessary, consult a locksmith to check and adjust the lock.
Q1: How much does a hardened lock key cost?
A1: The price of a hardened lock key varies depending on several factors, such as the type of lock it is designed for, the material used to make it, and the number of keys. Generally, keys for standard locks cost between $2 and $10. However, keys for high-security locks or those made from rare materials can cost $50 or more.
Q2: How long does it take to get a hardened lock key?
A2: The time it takes to get a hardened lock key depends on the type of key and the keying service. Standard keys can be obtained immediately from a key cutting service. However, high-security keys that require special authorization or keys that need to be ordered due to their rarity can take several days or even weeks to arrive.
Q3: Can hardened lock keys be duplicated?
A3: Yes, but some keys have designs that restrict duplication without the owner's consent. Moreover, some locks and keys are designed with features that make unauthorized duplication difficult.
Q4: What is the difference between a hardened lock key and a regular lock key?
A4: The difference between a hardened lock key and a regular lock key is the level of security. Hardened lock keys provide access to locks that offer higher security and resistance to picking, drilling, and other attack methods compared to standard keys and locks.