Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HV20565 found under Knob by Evans Tempcon Inc. The National Stock Number assigned to this part is 5355010431253, and the Federal Supply Class is 5355 Knobs And Pointers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HV20565.