The 1914N is a round rotary knob designed for use with 0.250-inch diameter shafts in rotary switch applications. It features a brass insert and is secured with a single set screw for reliable shaft engagement. The knob has an overall length of 0.75 inches, providing a compact form factor suitable for panel-mounted rotary controls. This knob is commonly used in industrial control panels, test equipment, and consumer electronics where a durable, precision-engineered interface between the operator and rotary switch mechanism is required.