Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A31C221D-D-A found under Controller Motor by I T I Electronics Inc. The National Stock Number assigned to this part is 6110010830500, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A31C221D-D-A.