Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number US2 52PL4J3XB found under Light Indicator by Siemens Industry Inc. The National Stock Number assigned to this part is 6220016675163, 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 US2 52PL4J3XB.