Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM66-18 found under Capacitor Fixed Electrolytic by General Dynamics Land Systems. The National Stock Number assigned to this part is 5910001918563, 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 SM66-18.