Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S0X55W found under Lamp Sodium by North American Philips Corp. The National Stock Number assigned to this part is 6240010978686, and the Federal Supply Class is 6240 Electric Lamps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S0X55W.