Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K2R391J found under Capacitor Fixed Ceramic Dielectr by King Electronics Inc. The National Stock Number assigned to this part is 5910000593722, 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 K2R391J.