Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21 0000 0032 found under Microcircuit Linear by Radio Systems Inc. The National Stock Number assigned to this part is 5962014611977, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 21 0000 0032.