Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 13207E1839-4 found under Curb Torsion Shaft by Cecom Lr Center. The National Stock Number assigned to this part is 5420000079393, and the Federal Supply Class is 5420 Bridges Fixed And Floating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 13207E1839-4.