Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 377-5004004 found under Light Warning by Ogden Air Logistics Center. The National Stock Number assigned to this part is 6220016432123, and the Federal Supply Class is 6220 Electric Vehicular Lights And Fixtures. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 377-5004004.