Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 999040213731 found under Relay Hybrid by Micro Tech Intl Inc. The National Stock Number assigned to this part is 5945001689401, 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 999040213731.