This is an OEM sourced replacement part, it is specially produced for use with Dewalt drill-drivers. It is the component which allows a user to secure a drill bit. The ratcheting action clicks the jaws tightly into place for reduced bit slippage. If your drill's bit retention is suffering, the rotation feels stiff, or the chuck has seized...Read more up entirely, a new chuck should fix the problem. The major benefit of a keyless chuck is that it can be loosened and tightened with only your hands, no need for special tools. Please note this high-quality component is sold individually.
The Dewalt N042665 Screw is used on a number of Dewalt cordless tools to attach the belt hook the tool. This is a phillips head screw. It is also used to attach the Dewalt N268199 Bit Holder Bracket.