Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 513403 found under Transducer Motional Pickup by Spicer Heavy Axle And Brake Inc. The National Stock Number assigned to this part is 6695015651579, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 513403.