Concrete Screw (Tapcon)
Tapcon 3/16" Concrete Screw — Complete Specifications
Pilot hole size, embedment depth, torque values, load ratings, and installation guide per ACI 318-19.
Fastener Specification — ACI 318-19
Diameter
3/16"
Pilot Hole Size
5/32"
Pilot Hole Depth
1" min (embedment + 1/4")
Embedment Depth
1" minimum
Torque Value
35-45 in-lbs
Max Load
150-300 lbs (tension), 200-400 lbs (shear)
Material
Carbon steel (blue), Stainless steel (silver)
Removable
Yes
Available Lengths
1-1/4", 1-3/4", 2-1/4", 2-3/4", 3-1/4"
Substrates: Concrete, Brick, CMU block (solid face)
Best for
- Electrical boxes
- Door frames
- Light fixtures
- Sill plates
- Furring strips
Not suitable for
- Hollow block cavities
- Structural loads
- Overhead applications without engineer approval
Installation tips
- 1.Always use a 5/32" carbide Tapcon bit — standard bits won't create proper thread engagement
- 2.Drill 1/4" deeper than the screw length to avoid bottoming out
- 3.Do not reuse holes — threads cut into concrete are damaged on removal
- 4.Use stainless steel Tapcons for exterior applications
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