Length of a Wedge Anchor
Determining wedge anchor length is crucial prior installing. Wedge anchors come in various diameters and various respective lengths to the diameters. Wedge anchor of a certain diameter must be embedded into the base at a minimum depth.
The below table maps the diameter of a wedge anchor to minimum embedment depth required.
| Diameter of Wedge Anchor | Minimum Embedment Depth |
| 1/4” | 1-1/8” |
| 5/16” | 1-1/4” |
| 3/8” | 1-1/2” |
| 1/2” | 2-1/4 |
| 5/8” | 2-3/4” |
| 3/4” | 3-1/4” |
| 7/8” | 3-7/8” |
| 1” | 4-1/2” |
| 1-1/4” | 5-1/2” |
Installing wedge anchors deeper than the minimum depth embedment can provide better fixation. Make sure depth of embedment is not taken to extremes.
Fixture Hole
| Diameter of Wedge Anchor | Fixture Hole |
| 1/4” | 5/16” |
| 5/16” | 3/8” |
| 3/8” | 1/2” |
| 1/2” | 5/8” |
| 5/8” | 3/4” |
| 3/4” | 7/8” |
| 7/8” | 1” |
| 1” | 1-1/4” |
| 1-1/4” | 1-3/8” |
Torque Value
| Diameter of Wedge Anchor | Torque Value ft/lbs |
| 1/4” | 5-10 |
| 5/16” | 5-10 |
| 3/8” | 25-30 |
| 1/2” | 50-60 |
| 5/8” | 75-90 |
| 3/4” | 150-175 |
| 7/8” | 200-250 |
| 1” | 250-300 |
| 1-1/4” | 400-450 |
