Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K4001-1 found under Relay Assembly by Dynalec Corporation. The National Stock Number assigned to this part is 5945012406330, 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 K4001-1.