Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A20 04477 found under Plate Piston Actuator by Portland Valve Llc. The National Stock Number assigned to this part is 3040011925977, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A20 04477.