Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M21-E501MN found under Capacitor Fixed Mic by Viking Technologies Ltd. The National Stock Number assigned to this part is 5910006869120, 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 M21-E501MN.