Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 556004-100 found under Motor Generator by Raytheon Company. The National Stock Number assigned to this part is 6125008233022, and the Federal Supply Class is 6125 Converters Electrical Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 556004-100.