Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EC30B-1-4SP found under Switch Rotary by Janco Corporation. The National Stock Number assigned to this part is 5930011094142, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like EC30B-1-4SP.