The 0025-Q is a plastic ball knob manufactured from phenolic material with a brass threaded insert, designed for manual control and adjustment in various mechanical assemblies. It features a 1/4-20 UNC threaded insert with a depth of 3/8 inch, providing secure fastening and reliable engagement. The phenolic construction offers excellent durability and resistance to wear, while the brass insert ensures corrosion resistance and long service life. This knob is commonly used in industrial equipment, machinery controls, and consumer appliances where a comfortable grip and reliable threaded connection are required.