Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AT12E1-1-2 found under Case Assembly Diffe by Liberty Ventures Inti Llc. The National Stock Number assigned to this part is 2520003509075, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AT12E1-1-2.