thumb turn
Interior deadbolt lever
A thumb turn is a small knob or lever on the inside of a door lock that can be rotated with the thumb and forefinger to engage or release the bolt, allowing locking and unlocking without a key: She flipped the thumb turn before going to bed.
Common on bathroom doors and deadbolts, thumb turns provide quick egress in emergencies while maintaining security from the outside.
- dead boltDoor lock requiring key
- deadboltKey-operated door lock
- lockMechanism requiring a key
- privacy lockInterior door securing mechanism
- knobRounded gripping fixture
latch · cylinder · lock mechanism · privacy · bathroom · bathroom door · interior door · door · door hardware · twist · rotate · snib · handle · keyless · interior · bolt · mechanism · lever
thumb turnkey lock
Mechanism requiring shaped metal
combination lock · smart lock · biometric lock · electronic lock · keypad lock
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