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Helical Knocked Inserts

Helical Knocked Inserts

Helical Knocked Inserts, also known as Helical Inserts, are specialized threaded inserts used to create or repair threads in metal components.

Purpose and Function:

The primary purpose of Helical Knocked Inserts is to provide a durable and strong threaded connection in metals, especially in materials like Aluminium   , stainless steel, and other soft metals. These inserts feature a helical or coiled design, with internal threads that match the required thread pitch. When installed into a pre-drilled or tapped hole, Helical Knocked Inserts create a reinforced threaded receptacle that prevents wear, enhances holding power, and enables repeated assembly and disassembly without damaging the parent material.

Features and Benefits:

  1. Thread Reinforcement:Helical Knocked Inserts significantly increase the thread strength and durability in soft metal materials, allowing for reliable and long-lasting connections.
  2. Versatility:With various sizes, thread types, and materials available, Helical Knocked Inserts provide versatility for different metal applications.
  3. Repair and Maintenance:Helical Knocked Inserts are commonly used for thread repair and maintenance, especially in damaged or worn-out threads.
  4. Corrosion Resistance:The materials used in Helical Knocked Inserts, such as Brass or Stainless Steel or other corrosion-resistant alloys, ensure protection against rust and corrosion.
  5. Time and Cost Efficiency:The installation of Helical Knocked Inserts is relatively quick and straightforward, reducing downtime and costly repairs.


The installation process for Helical Knocked Inserts involves the following steps:

  1. Preparation:A hole is drilled or tapped in the metal component, and the appropriate size Helical Knocked Insert is chosen based on the thread size required.
  2. Insertion:The Helical Knocked Insert is then screwed or knocked into the pre-drilled or tapped hole, depending on the type of Helical being used.
  3. Coiling Action:As the insert is installed, the helical design allows it to expand to create a tight and secure fit within the hole.


Helical Knocked Inserts find applications in various industries, including aerospace, automotive, electronics, and manufacturing. They are used in products like engines, transmissions, aircraft parts, and various other metal components requiring strong and reliable threaded connections.