Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AP391D08H found under Nut Plain Hexagon by Sps Technologies Inc. The National Stock Number assigned to this part is 5310013389435, 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 AP391D08H.