Thread forming with centertap is the ideal completion of the flow drilling process. After producing the hole/bush we form the DIN-thread in second step. Please note, the thread will be formed, no cutting! It is a chip- less process in which the material is rendered flowable and displaced from the thread root into the crests. It is similar in principle to the rolling of external threads. The Centertap threadformer is a HSS-E tool and available for all common thread sizes as M, MF, BSP, UNC, UNF, etc. The range includes centertaps with and without lubrication flutes, as well as TIN and TiCn coating.