KN900A1/4 is a machined aluminum control knob featuring a straight knurl grip pattern with an indicator line for precise positioning. The knob has a natural finish and is designed for 1/4" shaft applications with two No. 6-32 set screws for secure mounting. Key dimensional specifications include an outer diameter of 0.949 inches (24.1 mm), a body diameter of 0.894 inches (22.7 mm), and a height of 0.625 inches (15.9 mm). This knob is commonly used in electronic equipment, test instruments, and control panels where reliable grip and clear position indication are required.