Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X143967 found under Relay Thermal by Rockwell Automation Inc. The National Stock Number assigned to this part is 5945007785121, 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 X143967.