North Carolina Locksmith Practice Exam

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What is the correct term for the topmost portion of a key that is bitted?

Top of Blade
Blade Edge
Tip of Key
Key Neck

The correct answer is: Top of Blade

The topmost portion of a key that is bitted is referred to as the top of the blade. This is where the cuts or bittings are made to allow the key to engage with the pins inside the lock, aligning them to a specific height in order to unlock it. The bitting pattern plays a vital role in the function of the key, as it determines how the key interacts with the pins in the lock cylinder. The terms used in the other options do not accurately identify this specific part of the key. The blade edge typically refers to the side of the key rather than the top portion where the cuts are. The tip of the key refers to the very end of the key, which is often used for insertion into the lock but does not involve the bittings. The key neck is a broader term that can describe the portion of the key that connects the head to the blade but does not specifically pertain to the section where the bittings are located. Understanding these distinctions is crucial for locksmiths in identifying and discussing the components of a key and its functionality.