Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S2540 found under Punching Machine Turret Power Dr by Wiedemann Div. The National Stock Number assigned to this part is 3445004974222, and the Federal Supply Class is 3445 Punching And Shearing Machines. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S2540.