Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OB518423 found under by Orange Box Powerllc. The National Stock Number assigned to this part is 5440016077327, and the Federal Supply Class is 5440 Scaffolding Equipment And Concrete Forms. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like OB518423.