Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 73573-3 found under Actuator Hydraulic Pneumatic Rot by Vacco Industries. The National Stock Number assigned to this part is 4810010948473, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 73573-3.