Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MU5491 found under Light Emitting Diode by Monsanto Industrial Chemicals Co. The National Stock Number assigned to this part is 5980010203954, and the Federal Supply Class is 5980 Optoelectrical Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MU5491.