Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OT63F3 found under Disconnect Switch Air Outdoor by Fincantieri Spa. The National Stock Number assigned to this part is 6110013542782, 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 OT63F3.