Product types

of HELICOIL® threaded inserts

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Wide range of HELICOIL® insert types

Bollhoff Armstrong produce the widest range of wire thread inserts currently available from a single source, including the classic HELICOIL®, HELICOIL® plus for ease of installation and now HELICOIL® tangfree for those most sensitive of operations.

  • HELICOIL®

    HELICOIL® classic

    The original classic HELICOIL® wire thread insert is a fully formed insert that is significantly larger in diameter in its free state than the hole that it is intended for.

    HELICOIL® classic in detail
  • HELICOIL®

    HELICOIL® plus

    HELICOIL® plus has a reduced diameter first coil ensuring easy installation without the need for pre-winder tooling.

    HELICOIL® plus in detail
  • HELICOIL® tangfree

    HELICOIL® tangfree

    Unlike HELICOIL® classic and HELICOIL® plus the HELICOIL® tangfree product has a driving notch at both ends of the insert rather than the conventional tang.

    HELICOIL® tangfree in detail
  • HELICOIL® TWINSERT

    HELICOIL® TWINSERT

    The HELICOIL® TWINSERT system consists of two interlocking HELICOIL® inserts which together provide for the maximum strength of the reinforced thread.

    HELICOIL® TWINSERT in detail

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