Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BD1304 found under Nut Plain Hexagon by Hackney Bros Body Co. The National Stock Number assigned to this part is 5310007187518, 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 BD1304.