Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N3-57-6 found under Nut Plain Hexagon by Bofors A B. The National Stock Number assigned to this part is 5310121550596, 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 N3-57-6.