Thread technology

Have a look at our brand products HELICOIL® and AMTEC®
and the many technologies made by Böllhoff.

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  3. Thread technology

Creating threads in metals and plastics

We are specialised in creating threads in the most different materials. To do so we apply proven technologies such as screwing in HELICOIL® thread inserts in metals.


    ONSERT® Adhesion of fasteners

    Quick and process-safe adhesion

    The ONSERT® technology allows adhesion of different fasteners to diverse materials.

  • AMTEC®

    AMTEC® thread inserts

    Highly wear-resistant thread inserts for plastic parts

    AMTEC® stands for "After Moulding TEChnology" and refers to the installation of brass thread inserts into plastic components after moulding.

  • HELICOIL® plus threaded inserts

    HELICOIL® thread inserts

    For high-strength fastenings

    HELICOIL® thread inserts create high-strength fastenings in metallic low-strength materials and have been well established on the market for about 50 years.

  • HELICOIL® lock nuts

    HELICOIL® nuts

    Special nuts with screw lock

    HELICOIL® locknuts are a combination of high-strength nut bodies and HELICOIL® thread inserts.

    HELICOIL® locknuts
  • SEAL LOCK® sealing nuts

    SEAL LOCK® sealing nuts

    Sealing of bolt-nut joints

    SEAL LOCK® sealing nuts are an economical solution for reliable sealing against gaseous and liquid media under high pressure.


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