Jangle
/ˈdʒæŋɡl/
verb
To make a loud, harsh, metallic noise.
The keys jangled as he turned them in the lock.
Often appears as...
jangle keys
jangle coins
Definition 1 of 3
Pro Tip 1/3Metallic Objects
Commonly associated with metal objects like keys or coins that hit each other. 
I could hear the janitor's keys jangle as he walked down the hallway.
Pro Tip 2/3Signal Arrival
'Jangle' can indicate someone's arrival or movement due to associated sounds. 
The jangle of her bracelets announced her entry into the room.
Pro Tip 3/3Attention Grabbing
The noise is often used to attract attention or as a signal. 
He jangled his keys to catch everyone's attention.