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Hilti 100x X-FC 20-25 MX Power-Actuated Fastener

Comprehensive installation guide for the Hilti 100x X-FC 20-25 MX power-actuated fastener system, covering setup, application methods, and safety procedures for concrete installations.

Table of contents

Product Overview

The Hilti 100x X-FC 20-25 MX is a specialized power-actuated fastener designed for multiple-use applications in concrete. It is intended for non-structural purposes, providing a reliable solution for positioning and mounting tasks. The system is engineered for high performance and durability, manufactured in Austria to meet rigorous quality standards.

Safety and Preparation

Before beginning any installation, ensure that you are wearing appropriate personal protective equipment. The fastener is designed for use with specific Hilti tools, including the BX 3-ME-A22, BX 3-ME-22, and BX 4-22-ME models. Always verify that the concrete surface is suitable for power-actuated fastening and that the tool is in good working condition. The operating temperature for this system should not exceed 50 degrees Celsius.

Installation Methods

The system supports three primary installation methods, categorized as A, B, and C:

  • Method A (Direct Fastening): This method involves using the power-actuated tool to drive the fastener directly into the concrete. Ensure the fastener is correctly seated in the tool and aligned perpendicular to the surface.
  • Method B (Pre-drilling): This method requires drilling a hole to the specified diameter (d0) and depth (h0) before inserting the fastener. Ensure the drill is held at a 90-degree angle to the surface for optimal results.
  • Method C (Combined Fastening): This method utilizes a combination of components to secure the fastener. Similar to Method B, it requires precise drilling to ensure the anchor fits securely within the concrete substrate.

Operational Guidelines

During installation, it is critical to monitor the seating of the fastener. Ensure that the fastener is flush with the surface and that there is no visible damage to the surrounding concrete. If the fastener does not seat correctly, do not attempt to force it. Always follow the specific tool instructions provided with your Hilti power-actuated tool to ensure safe operation. After installation, verify that the fastener is stable and capable of supporting the intended load for non-structural applications. Proper maintenance of your tools and adherence to these guidelines will ensure the longevity and reliability of your installations.

Manufacturer information

Hilti Corporation

Brand profile

Practical help

Common problems

Fastener not seating flush with the surface

Check tool alignment and ensure the concrete surface is clean and free of debris.

Fastener loose after installation

Verify that the correct drill diameter and depth were used for methods B and C.

Before use

  • Verify compatibility with BX 3-ME-A22, BX 3-ME-22, or BX 4-22-ME tools
  • Ensure personal protective equipment is worn
  • Check that concrete surface is suitable for power-actuated fastening
  • Confirm operating temperature is below 50 degrees Celsius
  • Inspect tool for any signs of damage or wear

Model compatibility

  • Compatible with Hilti BX 3-ME-A22, BX 3-ME-22, and BX 4-22-ME tools
  • Intended for non-structural applications in concrete only

Manual page author

Michael Turner

Technical manual editor

Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.