Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XS306SUB0 found under Gear Cluster by L3 Communications Corp. The National Stock Number assigned to this part is 3020003106439, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like XS306SUB0.