Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A3851-56159 found under Clamp Probe Unit by Selex Es Ltd. The National Stock Number assigned to this part is 6610004532553, and the Federal Supply Class is 6610 Flight Instruments. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A3851-56159.