Document Identifier: 2107687-06.2021
Hilti HST3 M12 Series Concrete Anchors
This document provides technical specifications and installation guidance for the Hilti HST3, HST3-R, HST3 BW, and HST3-R BW M12 concrete anchor series.
Anchor Specifications
| Model | tfix, min (mm) | tfix, max (mm) | hnom, min (mm) | hnom, max (mm) | hmin (mm) |
|---|---|---|---|---|---|
| M12x85 10/- | 10 | 10 | 60 | 60 | 100 |
| M12x95 20/- | 20 | 20 | 60 | 60 | 100 |
| M12x105 30/10 | 10 | 30 | 60 | 80 | 40+hnom |
| M12x115 40/20 | 20 | 40 | 60 | 80 | 40+hnom |
| M12x125 50/30 | 30 | 50 | 60 | 80 | 40+hnom |
| M12x145 70/50 | 50 | 70 | 60 | 80 | 40+hnom |
| M12x165 90/70 | 15 | 90 | 60 | 135 | 40+hnom |
| M12x185 110/90 | 35 | 110 | 60 | 135 | 40+hnom |
| M12x215 140/120 | 65 | 140 | 60 | 135 | 40+hnom |
| M12x235 160/140 | 85 | 160 | 60 | 135 | 40+hnom |
| M12x255 180/160 | 105 | 180 | 60 | 135 | 40+hnom |
| M12x295 220/200 | 145 | 220 | 60 | 135 | 40+hnom |
| M12x350 275/255 | 200 | 275 | 60 | 135 | 40+hnom |
Note: The dimension '80' shown next to M12x165 90/70 likely refers to the overall length of that specific anchor model.
Installation Steps
Step 1a: Drilling the Anchor Hole
Procedure: Drill a hole in the base material using a suitable drill bit.
- Hole depth (h₁): hnom + 8mm
- Drill diameter (d₀): 12mm
- Drilling angle: ?90°
Visual Description: An illustration depicts a drill bit creating a hole in a surface at a 90-degree angle. The required hole depth (h₁) is shown as the nominal embedment depth (hnom) plus 8mm. The drill bit diameter (d₀) is specified as 12mm.
Step 1d: Drilling with Specific Depth and Clearance
Procedure: Drill a hole with a specified depth and ensure adequate clearance.
- Hole depth (h₁,nc): hnom + 20mm
- Drill diameter (d₀): 12mm
- Drilling angle: ?90°
- Minimum clearance: hmin - h₁,nc > 32mm
Visual Description: This illustration shows drilling a hole at a 90-degree angle. The hole depth (h₁,nc) is defined as the nominal embedment depth (hnom) plus 20mm. The drill diameter (d₀) is 12mm. The diagram indicates this process is performed 3 times and highlights a requirement for the minimum clearance (hmin minus h₁,nc) to be greater than 32mm.
Step 1b: Setting the Anchor with a Setting Tool
Procedure: Use a designated setting tool to properly set the anchor.
- Hole depth (h₁): hnom + 10mm
- Drill diameter (d₀): 12mm
- Setting Tools: DD EC-1 or DD 30-W
- Angle: ?90°
Visual Description: The illustration shows a setting tool (DD EC-1 or DD 30-W) being used to install the anchor. The hole depth (h₁) is specified as the nominal embedment depth (hnom) plus 10mm. The drill diameter (d₀) is 12mm, and the operation is performed at a 90-degree angle. Arrows indicate the tool's action.
Step 1c: Setting the Anchor with a Hammer Drill
Procedure: Utilize a hammer drill for anchor setting.
- Hole depth (h₁): hnom + 8mm
- Drill diameter (d₀): 12mm
- Hammer Drill Types: TE-CD or TE-YD
- Angle: ?90°
Visual Description: This diagram illustrates the use of a hammer drill (TE-CD or TE-YD) for anchor installation. The hole depth (h₁) is set to hnom + 8mm, and the drill diameter (d₀) is 12mm. The operation is performed at a 90-degree angle.
Step 2a/2b: Anchor Insertion and Setting
Procedure: Insert the anchor into the drilled hole and set it using the appropriate tool.
- Setting Tool: HS-SC
Visual Description: The illustrations show the anchor being inserted into the prepared hole. A setting tool (HS-SC) is then used to properly set the anchor in place. An eye symbol (?️) indicates the importance of visual inspection during this process.
Step 3: Pressure Application and Verification
Procedure: Apply specified pressure and visually verify the installation.
- Pressure: 6 bar / 90 psi
Visual Description: This step involves applying a pressure of 6 bar (or 90 psi) to the anchor system. An eye symbol (?️) emphasizes the need for visual confirmation of the correct installation.
Step 4a: Torque Verification
Procedure: Check the installation torque to ensure proper fastening.
- Installation Torque (Tinst): 60 Nm
- Reference Distance: 19mm
Visual Description: The illustration shows a torque wrench being used to verify the installation torque (Tinst), which is specified as 60 Nm. A measurement of 19mm is indicated, likely related to the torque application point or anchor embedment.
Step 4b: Installation of Specific Anchor Types
Procedure: Install specific anchor models as indicated.
- Anchor Types: SIW 6AT-A22+ / SI-AT-A22
- Reference Distance: 19mm
Visual Description: This diagram illustrates the installation of specific Hilti anchor types: SIW 6AT-A22+ and SI-AT-A22. A measurement of 19mm is shown, which may refer to the required embedment depth or a clearance requirement for these particular anchors.
