32
        
        
          SHANK DIAMETER
        
        
          SHANK
        
        
          LENGTH
        
        
          PILOT
        
        
          PILOT DIAMETER
        
        
          RECESS
        
        
          BODY
        
        
          BODY DIAMETER
        
        
          
            COUNTERBORES
          
        
        
          
            COUNTERBORE NOMENCLATURE
          
        
        
          
            A General Guide
          
        
        
          Counterbores are used to create seatings for cap screw heads and
        
        
          are therefore identified by the cap screw they suit. They are available
        
        
          with straight or Morse Taper shanks.