That s because modern door hardware uses a hidden mechanism called a detent to fasten the doorknob that can only be released using a small screwdriver tip or the end of a paper clip depending on your style of hardware.
													
																	Tightrn security door handle. 
									
	
		
	
																	I show how i tightened my loose door handle that is made by kwikset. 
																	Determine whether you will need an allen wrench or a screwdriver based on the style of set screw which you will find on the bottom of the door lever. 
																	Occasionally the door handle may instead use a different screw type such as a phillip s head screw. 
																	Remove the screw and slip the lever handle off the rod. 
															
													
									
	
		
	
																	Tighten internal screws loose door knob or loose door handle. 
																	If that is the case use a screwdriver instead of an allen wrench. 
																	Insert the tip of the wrench into the screw and rotate the tool counter clockwise until the faceplate is free to slide off. 
																	Step 2 inspect the rod s surface and locate the groove where the set screw needs to be secured.