Screw head slot shaper

Abstract

A screw head slot shaper includes a shank and a head slot molding member formed on an upper end of the shank. The shake can be of any shape and of a proper length. The head slot molding member has plural square layers, which respectively have different sizes. So a single screw head slot shaper can manufacture screws with a head formed with a single layer slot, a two-layered slot or a three-layered slot depending on demands. Thus many different tools may conveniently be used for driving screws with a head with a slot of a single or plural square layers.

1 . A screw head slot shaper comprising: 
 a shank of any shape having a proper length: and    a head slot molding member formed on an upper end of said shank and having three square layers of different sizes.    
   
   
       2 . A screw head shaper comprising: 
 a shank of any shape having a proper length: and,    a head slot molding member formed on an upper end of said shank and having two square layers of different sizes.    
   
   
       3 . The screw head slot shaper as claimed in  claim 1 , wherein said head slot molding member is shaped as a single layer for forming a screw head with a slot of a single layer.  
   
   
       4 . The screw head slot shaper as claimed in  claim 1 , wherein said head slot molding member is shaped as two layers for forming a crew head with a slot of two square layers of different sizes.  
   
   
       5 . The screw head slot shaper as claimed in  claim 1 , wherein said head slot molding member is shaped as three layers for forming a screw head with a slot of three layers of different sizes.