This official Fender Scratchplate/Cavity Cover/Control Plate Mounting Screws come in a pack of 24 and have a domed/raised countersunk phillips head. For use when mounting all manner of guitar parts: Stratocaster style scratchplates, Telecaster control plates, tremolo back plates, jack plates etc. The screws have a 3 mm thread diameter are 13 mm long (No.4 x 1/2"). Pilot holes should always be drilled when installing guitar screws.