Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 18AK found under Punching Machine Metal Hand by Rotex Punch Company Inc. The National Stock Number assigned to this part is 3445014847479, 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 18AK.