Vishay 22.2mm Black Potentiometer Knob for 6.35mm Shaft Splined, 18A21B010 / 5042790

locking key, nut ; mounting instructions. The Vishay 18A21B010 is the Model 18 (PR2) dial in black chrome. The Model 18 (PR2) is a 15-turn, 22.2mm diameter dial. It is the perfect choice of dial for industrial machinery which require a compact dial that takes up minimal space on a panel. The Model 18 is designed for use with precision potentiometers and other rotating devices with a metal shaft. The outside of this Model 18 dial has a high-quality black chrome finish with white text and markings for easy readability. The viewing window also has a black background with white text for clear visibility of the number of turns. Mounting the Model 18 (PR2) is really straight-forward, and instructions on this are included. Diameter: 22.2mm shaft 0-15 turns Click brake No backlash Black chrome finish with white markings. Alternative Options: ; 797-2924 797-2924 - 18A11B010E1 (1/4 satin chrome) ; 104-187 104-187 - 18B11B010 (6mm satin chrome)