Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 193-4-1 found under Capacitor Variable Air Dielectric by Viking Technologies Ltd. The National Stock Number assigned to this part is 5910008280837, 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 193-4-1.