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📘 A lock separates housing from plug

A lock separates housing from plug

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

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What you’ll learn

The cylinder
The pins
The key
The shear line
The springs
The plug
The cam
Master keying
Security
The sequence

Questions this course answers

What blocks the plug when the lock is locked?

A driver pin bridges the rotating plug and stationary housing.

What does key bitting control?

Cuts place each key pin at a selected height.

What is the shear line?

Aligned pin interfaces at that boundary permit rotation.

What moves the latch after the plug turns?

The rotating rear cam engages the lock case.

What restores the locked pin arrangement?

Springs push the pin stacks back when the key is removed.

Grounded in trusted sources

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Every Wunder lesson is built from real, reputable sources — never invented.

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