Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6420005-27 found under Disk And Tape Drive Unit by Quantum Corp. The National Stock Number assigned to this part is 7025015240013, 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 6420005-27.