Philippines

Gi Self Undercut Anchor / Self-undercutting Anchor G8.8

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Ultimate-performance through-set undercut anchor for dynamic

  • Fast and reliable installation without the need for a separate undercutting tool or additional operations
  • Combines the advantages of a post-installed mechanical anchor, i.e. flexibility and immediate loading, with the performance of a cast-in-place headed stud
  • low expansion forces
  • provides a secure hold even in cracked concrete under dynamic loading.  

An Undercut Anchor is a fastening device primarily used for attaching objects to concrete or masonry surfaces. It is given its name due to the undercut or locking mechanism it creates within the material it is installed into, resulting in a robust and secure hold.

These anchors consist of a threaded bolt or rod that is placed into a pre-drilled hole in the surface. When installed, the anchor expands and creates the undercut, which ensures that the anchor cannot be pulled out of the surface, providing a stable hold for the object being attached.

Undercut anchors are frequently used in the construction and engineering sectors when a reliable, strong hold is necessary. They are often used to anchor heavy machinery, steel frames, and other large objects to concrete or masonry surfaces.

There are various types of undercut anchors available, including wedge anchors, sleeve anchors, and drop-in anchors. The selection of the correct anchor type for a specific application is dependent on the load requirements of the object being attached.


Some of the most common uses of undercut anchors include:

  1. Attaching heavy machinery and equipment to concrete floors or walls in industrial settings, such as factories, warehouses, and manufacturing plants.

  2. Securing steel frames, columns, and beams to concrete foundations in building construction.

  3. Installing guardrails, handrails, and other safety equipment in commercial and industrial settings.

  4. Fastening electrical and plumbing components to concrete or masonry surfaces.

  5. Securing outdoor structures, such as fences, pergolas, and playground equipment, to concrete or masonry surfaces.

  6. Attaching signs and banners to walls or poles.

  7. Anchoring anchor bolts for mounting steel plates, handrails, and other items.

  8. Fastening materials used for repair, maintenance and renovation projects.


Some of the main advantages:

  1. High load capacity: Undercut anchors can support heavy loads due to the locking mechanism created by the undercut. This makes them suitable for applications where a strong and reliable hold is required.

  2. Versatility: Undercut anchors can be used in a range of materials, including concrete, masonry, and stone, making them a versatile fastening solution.

  3. Easy installation: Undercut anchors are relatively easy to install and require only a drill and wrench. This makes them a popular choice for construction and engineering projects where time is a crucial factor.

  4. Corrosion resistance: Undercut anchors are available in various materials, including stainless steel and galvanized steel, which provide excellent corrosion resistance. This makes them suitable for use in harsh environments where corrosion is a concern.

  5. Reliable performance: Undercut anchors have a proven track record of reliable performance and have been extensively tested to ensure that they can provide a secure hold in a range of materials and conditions.

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