Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ES0 690309 31 found under Capacitor Fixed Mic by American Telephone And Telegraph Co. The National Stock Number assigned to this part is 5910006488286, 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 ES0 690309 31.