Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 990028-001 found under Disk Flexible by Cpt Corp. The National Stock Number assigned to this part is 7045012423359, and the Federal Supply Class is 7045 Adp Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 990028-001.