As nouns the difference between bolt and login

is that bolt is a (usually) metal fastener consisting of a cylindrical body that is threaded, with a larger head on one end. It can be inserted into an unthreaded hole up to the head, with a nut then threaded on the other end; a heavy machine screw while login is a combination of a user's identification and password used to enter a computer, program, network, etc.

As verbs the difference between bolt and login

is that bolt is to connect or assemble pieces using a bolt while login is misspelling of lang=en.

As an adverb bolt

is suddenly; straight; unbendingly.

As a proper noun Bolt

is {{surname|from=nicknames}.