Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OH51 found under Nut Self Locking Hexagon by Magnum Power Products Llc. The National Stock Number assigned to this part is 5310015497175, 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 OH51.