Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XAL-B04 found under Case Switch Box by Schneider Electric Usa Inc. The National Stock Number assigned to this part is 5975014505803, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like XAL-B04.