The 472800202 is a steel lockwasher designed for rotary A and RTA series controls that utilize M10 x 0.75 metric threads. This component features a nickel-plated finish for corrosion resistance and durability. The lockwasher has an outer diameter of 0.600 inches (15.24 mm), an inner diameter of 0.420 inches (10.68 mm), and a thickness of 0.020 inches (0.50 mm), with an additional dimension of 0.048 inches (1.22 mm). It is commonly used in panel-mount assemblies to secure rotary actuators and prevent loosening under vibration or repeated operation.