Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TPG-321-ACT5 found under Insert Cutting Tool by Hertel Cutting Technologies Inc. The National Stock Number assigned to this part is 3455010467064, and the Federal Supply Class is 3455 Cutting Tools For Machine Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TPG-321-ACT5.