Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ISO7040-M16-8-A2R found under Nut Self Locking Hexagon by International Organization. The National Stock Number assigned to this part is 5310016644555, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ISO7040-M16-8-A2R.