# Threaded rings and conical bolts for drilling casing couplings

URL: https://knoedlseder.com/en/products/gewinderinge-konusschrauben-bohrrohrverschraubungen  
Languages: [de](https://knoedlseder.com/de/products/gewinderinge-konusschrauben-bohrrohrverschraubungen?format=md) · [en](https://knoedlseder.com/en/products/gewinderinge-konusschrauben-bohrrohrverschraubungen?format=md) · [cz](https://knoedlseder.com/cz/products/gewinderinge-konusschrauben-bohrrohrverschraubungen?format=md)

![Zwei Gewinderinge mit Innengewinde, dahinter eine Konusschraube mit Außengewinde.](https://knoedlseder.com/media-cache/uploads/2026/11/gewinderinge-konusschrauben-bohrrohrverschraubungen-bild-71.jpg)

Category: [Drilling Tools and Accessories](https://knoedlseder.com/en/products/categories/werkzeuge-und-zubehoer?format=md)

The rings for drilling casing couplings are threaded on the inside only. The conical bolt carries the external thread. Features:

-   Rings with internal threads
-   Conical bolts with external threads
-   Selection to match the existing casing coupling

## Related Products

- [Conical rings for drilling casing couplings](https://knoedlseder.com/en/products/konusringe-fuer-bohrrohrverschraubungen?format=md)
- [Casing Tubes | Casing for Drilling Systems](https://knoedlseder.com/en/products/bohrrohre?format=md)

## Contact Person

- [Head of Internal Sales](https://knoedlseder.com/en/team_members/michael-kirchinger-2?format=md)  
  Head of Internal Sales Germany  
  Gotthard Knödlseder Hammerwerk GmbH  
  Email: km@knoedlseder.com  
  Phone: +49 85 86 96 78 11
- [Head of Internal Sales](https://knoedlseder.com/en/team_members/thomas-schmid?format=md)  
  Head of Internal Sales Austria  
  Gotthard Knödlseder Bohrtechnik GmbH  
  Email: ts@knoedlseder.com  
  Phone: +49 85 86 96 78 14