Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NT5206 found under Nut Plain Hexagon by R B And W Corp. The National Stock Number assigned to this part is 5310011390865, 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 NT5206.