SafeSet Technology for Mechanical Anchors

Why does installation torque matter?

Improper installation torque can affect the performance of mechanical anchors.

Traditional installation method

Traditional installation method

Installers may not consistently install mechanical anchors

anchor installers

53 professional inspectors surveyed

Majority of inspectors surveyed have over 3 years’ experience

Key Takeaways

  1. 56% of failed inspections are due to lack of installer expertise
  2. 33% of failed inspections are due to under torqueing
  3. 17% of failed inspections are due to over torqueing
  4. 26 inspectors said mechanical anchors fail inspections about 1 out of 50 times

How Installation Torque Can Affect Expansion Anchors

properly torqued anchor

Proper Torque

Following the traditional installation method helps ensure the mechanical anchor is properly set. The manufacturer's listed installation torque expands the anchor wedge properly and provides clamping in the connection.

over torqued anchor

Over Torque

Applying too much torque to the nut will result in the mechanical anchor being over torqued. Over torquing may result in catastrophic damage to the base concrete or the integrity of the anchor itself being compromised.

under torqued anchor

Under Torque

Not reaching the recommended installation torque results in the wedges not being fully expanded and less than optimal clamping. This can result in higher displacement of the fixture.

How can improper installation torque affect performance of mechanical anchors?

proper torque vs under torque and over torque

Introducing Hilti SafeSet Technology for mechanical anchors*

SafeSet Technology

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Hilti SafeSet technology is a proven methodology developed by Hilti concrete construction experts to provide new ways for engineers and contractors to minimize installation errors.

Hilti now offers SafeSet reliability to mechanical anchors with the Adaptive Torque (AT) System. The AT System consists of Hilti SIW 6AT cordless impact tool and the SI-AT module.

*Currently designed for select sizes of Hilti KB(-TZ) anchors only.  Contact Hilti for details.

Installation of Hilti KB-TZ/KB3 with SafeSet

Installation of Hilti KB-TZ/KB3 with SafeSet

The anchor setting trifecta: SafeSet

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Safety. Productivity. Approval. SafeSet is Hilti’s proven methodology for consistently high-quality anchor installation at lightning speed.

The SIW 6AT-A22, along with the SI-AT-A22 module, fulfills all SafeSet criteria because they save time and reduce costs while also reducing the potential for installation error.