Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C3S30B AND 2 OF C6S found under Relay Electromagnetic by Fas Controls Inc. The National Stock Number assigned to this part is 5945005347805, and the Federal Supply Class is 5945 Relays And Solenoids. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C3S30B AND 2 OF C6S.