Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 64A98C59-1 found under Tachourmeter Drive by Gse Spares Inc. The National Stock Number assigned to this part is 1730001096745, 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 64A98C59-1.