Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W9AS1D52-5 found under Relay Solid State by Se Relays Llc Magnecraft. The National Stock Number assigned to this part is 5945015538390, 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 W9AS1D52-5.