Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 188527-B21 found under Tape Electronic Data Processing by Compaq Computer Corp. The National Stock Number assigned to this part is 7045015023831, 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 188527-B21.