Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C42315-A9 found under Stop Electrical Switch by Siemens Ltd. The National Stock Number assigned to this part is 5930011564304, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C42315-A9.