Hexagon Flange Self Cutting Concrete Anchor Bolt

The Hexagon Flange Self Cutting Concrete Anchor Bolt from China Xiaoguo® is composed of five parts: the head, the flange, the shaft, the self-cutting thread and the tail guide section.

1.Hex Flange Head

The head is of a standard hexagonal shape, and the width of opposite sides conforms to the DIN hexagonal head dimensions.Below the head is an integrally formed flange disc.

Function:

Hexagonal head adapter standard socket wrench or impact wrench is available, making installation simple.

The flange increases the contact area with the fixed component, preventing the compression of soft materials.

The bottom of the flange is equipped with radial serrations, which prevent loosening due to vibration after being tightened.

2.The rod section and the threaded transition section

Rod transition: There is a short light rod (about 2–3 mm) below the connecting flange. This prevents the thread root from being overly concentrated and also provides a smooth bearing surface for the flange.

3.Self‑cutting / Tapping Thread

Standard metric thread, with a tooth profile angle of 60°, sharp teeth and a cutting edge.

The thread is asymmetrical. The front side of the advancing side is steeper while the rear side is gentler, which is conducive to cutting into the substrate.

4.Tail guiding section

Guide the Hexagon Flange Self Cutting Concrete Anchor Bolt into the drilled hole to prevent any deviation during the initial engagement of the threads.

Hexagon Flange Self Cutting Concrete Anchor Bolt VS Traditional expansion anchor bolts

Taking multiple aspects into consideration and making a comprehensive comparison between Hexagon Flange Self Cutting Concrete Anchor Bolt and Traditional expansion anchor bolts.

1.A direct comparison was made in terms of installation steps, substrate requirements, load-bearing capacity, and disassemblability, etc.

Comparison project Hexagon Flange Self Cutting Concrete Anchor Bolt Traditional expansion anchor bolts

Installation steps ① Drilling → ② Cleaning the hole → ③ Inserting ① Drilling → ② Cleaning the hole → ③ Inserting expansion tube → ④ Knocking in the cone head → ⑤ Tightening the nut

Installation tools Impact drill + socket wrench / impact wrench Impact drill + hammer + wrench

Is it necessary to strike? Not necessary. Required

Margin/Spacing Requirements Small Large

Base material risk No expansion stress, does not cause cracking of concrete Excessive expansion stress may lead to cracking of concrete

Will it be in operation immediately after installation? Yes Yes

2.Installation time comparison (single-person operation, single anchor bolt)

Hexagon Flange Self Cutting Concrete Anchor Bolt：Approximately 40 to 60 seconds (drilling + cleaning + insertion)

Traditional expansion anchor bolts：Approximately 90 - 120 seconds (drilling + cleaning + insertion + tapping + tightening)

3.Re-work and repair costs

Hexagon Flange Self Cutting Concrete Anchor Bolt：During installation, a torque wrench can easily control the torque and will not crack the concrete.

Traditional expansion anchor bolts：During the installation process, excessive force was applied, causing the concrete to crack. It is necessary to remove the old part and drill a new hole, which is time-consuming and may also affect the appearance.