stem faucet
Device stopping or starting the flow of hot or cold water, as well as regulating its flow rate.
valve seat 
Part against which the stem washer presses to prevent leakage.
thread 
Helical grooves at the end of the spout to which an accessory, such as an aerator, can be attached.
spout 
Curved end out of which water flows.
spindle 
Metal unit that provides the link between the handle and the stem washer.
packing 
Gasket preventing the spindle from leaking.
stem washer 
Stopper attached to the bottom of the spindle. When inserted into the valve seat, it blocks the inflow of water; when raised, it allows the water to flow.
stem holder 
Bracket for the stem washer.
washer 
Part inserted over the spindle that fits into the body of the faucet.
packing nut 
Metal part allowing the packing to be tightened against the washer.
handle 
When turned, raises or lowers the spindle, allowing the water to be turned off or on.