Talk to our experts: +49 6593 / 2108–100

Rolling threads
BSH flat®

We recalibrate screw threads for more precise screwing-in processes

The quality of threaded components is shown in the details. We recalibrate threads after surface treatment in an elaborate process to meet the highest requirements when assembling our products. This rolling and smoothing of the thread eliminates indentations that may have been caused in previous production processes. The advantage here is a low scattering of torques when screwed in and it also prevents impact points from causing chips when screwed into light metal casings. This reworking process contributes to the quality of our products as is reflected in the assembly process.

Your benefits

  1. Smoothing and flattening of indentations in the thread
  2. Reduced torque scattering when screwed in
  3. Prevention of chip formation when screwed into a light metal housing

We are here for you

Contact us

Our Sales Team

Our Sales Team

Applications development

Applications development

HR department

HR department


Bilstein & Siekermann GmbH + Co. KG
Industriestraße 1
D-54576 Hillesheim

Video conferencing

In light of the current situation, we will be happy to discuss your topics in a video conference. To arrange an appointment, please contact us and tell us what you would like to discuss at info(at) You will receive a link to the meeting by email.

We have won awards

Awards are a mark of quality. See for yourself!

  • German Brand Award 2019
  • Innovator des Jahres 2018
  • TOP 100 2017
  • Großer Preis der Mittelstandes
  • Beste Arbeitgeber Marke 2019
Mail Ansprechpartner