Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DSI-500-1696 found under by Foster Manufacturing Co Inc. The National Stock Number assigned to this part is 5850015862182, and the Federal Supply Class is 5850 Visible And Invisible Light Communication Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DSI-500-1696.