Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 921-0020-00 found under Capacitor Variable by R F Products Inc. The National Stock Number assigned to this part is 5910009305590, and the Federal Supply Class is 5910 Capacitors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 921-0020-00.