Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 542 16 78-47 found under Nut Plain Hexagon by Priority Plant Services Ltd. The National Stock Number assigned to this part is 5310016301782, 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 542 16 78-47.