Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HM4-01-435-0028-5 found under Actuator Elect by Flowserve Corporation. The National Stock Number assigned to this part is 4810010379522, 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 HM4-01-435-0028-5.