2820AT is a phenolic knob designed for control panel and instrumentation applications. It features a 1/4-20 UNC-2B threaded brass insert (10035, H.H. Brass) for secure shaft mounting, with a 1° draft angle on the inner bore. The knob is manufactured from general-purpose phenolic material (B11) in black color, with an outer diameter of 1.50 inches and a height of approximately 0.61 inches after finishing. Common applications include industrial equipment, electronic enclosures, and machinery where durable, heat-resistant control knobs are required.