Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 475 5551 001 found under Light Dimmer Assy by Korry Electronics Co. The National Stock Number assigned to this part is 5999015704324, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 475 5551 001.