Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MB 13 64X5.75 found under Probe Eddy Current by Tyvin Corp. The National Stock Number assigned to this part is 6635012792008, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MB 13 64X5.75.