Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FS7-31 found under Switch Flow by Itt Mcdonnell Miller A Unit Of Itt. The National Stock Number assigned to this part is 5930014204480, 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 FS7-31.