Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of fasten is as below...
Screw ::
Screw (v. t.) To turn, as a screw; to apply a screw to; to press,fasten, or make firm, by means of a screw or screws; as, to screw a lock on a door; to screw a press..
Flange :: Flange (n.) A plate or ring to form a rim at the end of a pipe when fastened to the pipe.