Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 03575-66551 found under Electrical Meter Subassembly by Hewlett Packard Co. The National Stock Number assigned to this part is 6625013087536, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 03575-66551.