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Question: 1 / 435

Which part of a key is designed to enter the keyway first?

Tip Cut

The tip cut of a key is specifically designed to enter the keyway first because it is the frontmost part of the key. This section is typically narrower and tapers slightly, allowing it to smoothly guide into the keyway of a lock. This design is crucial as it helps align the key correctly within the lock, ensuring a proper fit that allows the subsequent parts of the key to engage with the lock's internal mechanisms.

The blade follows the tip cut and contains the cuts or grooves that match the pins inside the lock; however, it is the tip that initiates the entry. The shoulder of the key serves as a stop to prevent the key from being inserted too far into the lock, while the heel is at the opposite end and does not engage with the lock until the key is fully inserted. Understanding the function and design of each part of the key reinforces the mechanical interactions that occur when operating locks.

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Blade

Shoulder

Heel

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