Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JMSW-18XL found under Relay by Control Systems Co. The National Stock Number assigned to this part is 5945012168957, 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 JMSW-18XL.