Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3 8NUT found under Nut Plain Hexagon by Kalyn Siebert I Inc. The National Stock Number assigned to this part is 5310015173750, 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 3 8NUT.