Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11866 found under Relay Electromagnet by Tvh Parts Co. The National Stock Number assigned to this part is 5945006224804, 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 11866.