Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 39M5657-Q70 found under Drive Tape Lto by Ibm. The National Stock Number assigned to this part is 7025015483139, and the Federal Supply Class is 7025 Adp Input Output And Storage Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 39M5657-Q70.