Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FS1-17 found under Switch Sensitive by Itt Mcdonnell Miller A Unit Of Itt. The National Stock Number assigned to this part is 5930005791003, 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 FS1-17.