Some common brass CNC lathe parts include chuck jaws, which are used to hold the workpiece in place during machining, and tool holders, which are used to secure the cutting tools to the lathe. Feed screws, which are used to move the workpiece along the axis of the lathe, are another important brass CNC lathe part. Other brass parts that may be used in CNC lathes include guide bushings, lock nuts, and bearing blocks.