Chuck (1/2-inch) 42-66-0785

This is an authentic Milwaukee part, sold individually. If your drill's bit retention is suffering, the rotation feels stiff, or the chuck has seized up entirely, a new chuck should fix the problem. The chuck is the top portion of the drill that holds the different drill bits. It is compatible with the hammer drills listed below. In order to install this chuck you will need to thread the chuck assembly onto the spindle then secure the chuck assembly as tightly as possible (by hand). Then open the chuck to accept the retaining screw and install the retaining screw. Secure the screw with a Phillips screwdriver. The screw is reverse threaded requiring counter clockwise rotation to secure.