Your specialist
in flow drilling

Centertap threadformer

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.

Centertap thread forming in practice => Video
Here you will find the required process data => Centerdrill Explorer.

Your benefits

  • Non-cutting manufacturing process
  • Replace the rivet nuts, Welding nuts and Thread cutting in thin materials
  • No more wobbling, no loosening, no twisting!
  • DIN-thread by thread forming, no cutting
  • Reinforced orientation of the material fibers results in threads that can withstand high drawing forces
  • Highly accurate threads, therefore miscutting is not possible
  • Low wear after multiple connections due to increased hardness
  • 3 to 10 times faster than thread cutting
  • Increased life due to special TIN- and TiCn- coating
  • Reduced friction, less burr formation and scoring
  • Can be automated
Followed by thread forming with Centertap

During thread forming we recommend to use our Centertap-lubricant.
You can find all our products also in our Online-Shop!


Centerdrill GmbH
Valterweg 19
D-65817 Eppstein

Tel. +49 (0) 6198/5858-97
Fax. +49 (0) 6198/5858-99


Tel. +49 (0) 6198/5858-97


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Centerdrill Mediatheke
Centerdrill explorer
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