Abstract: A non-slip drill chuck apparatus is provided on a hand drill. The drill chuck has a shell with bevel gear teeth for use with drill motors and the like, a stationary collar which extends from the shell and a plurality of adjustable jaws that extends from the stationary collar. The apparatus consists of a chuck key mechanism for engagement with the collar and the shell for non-inadvertently disengagable tightening the jaws of the drill chuck tighter about a drill bit to prevent slippage of the drill bit, so as not to cause damage to the drill bit and the drill chuck itself.