NOCTI Cabinetmaking Practice Exam

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What is the term for a chuck that does not require a key?

Keyed

Self-tightening

Snap-on

Keyless

Keyless describes a drill chuck that tightens without a separate key. In a keyed chuck, you insert a small key into slots and turn it to close the jaws around the bit. A keyless chuck uses a hand-tightening action—usually a knurled sleeve or built-in mechanism—to grip the bit directly, which makes bit changes faster and eliminates the risk of losing a key. The other terms don’t fit because they describe different concepts: a keyed chuck requires a tool to tighten; self-tightening or snap-on aren’t the standard terms used to describe this type of chuck.