Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TD3203A found under Shaft Upr Torsion D by Coltec Industries Inc. The National Stock Number assigned to this part is 2520011714192, 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 TD3203A.