Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S50-00136 found under by Cooper Notification Inc. The National Stock Number assigned to this part is 5830016092492, and the Federal Supply Class is 5830 Intercommunication And Public Address Systems Except Airborne. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S50-00136.