Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 28-60NC found under Milling Machine Profiling by Cincinnati Machine Co. The National Stock Number assigned to this part is 3417001507121, and the Federal Supply Class is 3417 Milling Machines. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 28-60NC.