Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4F55601-105E found under Rail Assembly Ramp by D J Engineering Inc. The National Stock Number assigned to this part is 1560002489164, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4F55601-105E.