527 4X1/2 BUTTON HEAD SCREWS

These are 4x1/2" Button Head Sheet Metal Screws by Du-Bro.         
                                                                              
FEATURES: Zinc plated metal construction with clear chromate.                 
          Non-slip socket drive insert.                                       
          The large head of the screw acts as a washer.                       
          A new design that's great for mounting servos, cowls, landing       
            gear, etc.                                                        
                                                                              
INCLUDES: (8) Screws                                                          
                                                                              
SPECS:    Length:   1/2"                                                      
          Diameter: 4mm                                                       
                                                                              
COMMENTS: This uses a 1/16" size allen wrench HCAR0520