CompX National disc tumbler cam locks for cabinet doors and drawers. Cylinder length is 1-3/16". Available in bright brass. A 3-digit key number at the end of a part number means those locks are keyed alike to that 3-digit number. A KD at the end of a part number means the locks are keyed different and a KDM means the locks are keyed different and master keyed (masterkeys sold separately). N8053 03 390.