Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X20-3939 found under Capacitor Fixed Plastic Dielectr by Cleveland Motion Controls Inc. The National Stock Number assigned to this part is 5910006038809, 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 X20-3939.