<P> A key is a device that is used to operate a lock ( such as to lock or unlock it ) . A typical key is a small piece of metal consisting of two parts : the bit or blade , which slides into the keyway of the lock and distinguishes between different keys , and the bow , which is left protruding so that torque can be applied by the user . A key is usually intended to operate one specific lock or a small number of locks that are keyed alike , so each lock requires a unique key . The key serves as a security token for access to the locked area ; only persons having the correct key can open the lock and gain access . Common metals include brass , plated brass , nickel silver , and steel . </P>
<P> A key is a device that is used to operate a lock ( such as to lock or unlock it ) . A typical key is a small piece of metal consisting of two parts : the bit or blade , which slides into the keyway of the lock and distinguishes between different keys , and the bow , which is left protruding so that torque can be applied by the user . A key is usually intended to operate one specific lock or a small number of locks that are keyed alike , so each lock requires a unique key . The key serves as a security token for access to the locked area ; only persons having the correct key can open the lock and gain access . Common metals include brass , plated brass , nickel silver , and steel . </P>
what is the top part of a key called
what is the top part of a key called
bow
bow