Timer Knob Replacement for FD Series Spring Wound Timers White Dial

knob for the FD series spring wound type in-wall mounted timers for fans, lights, motors, heaters, and other energy consuming loads part # 146–00046 Outer Diameter: 1″; D-shape shaft: 3/16″; 1 knob included; Color: White Fits on a 3/16″ size D-shape shaft; Snug-fit design with 4 raised ribs running down the hole, giving it a slight interference fit Genuine replacement part; Also known as older parts 146MT574A and 146MT494A Press-on knob design ensures quick and easy installation