Simpson - STB2-25134 1/4" x 1-3/4" Strong-Bolt® 2 Anchor
These anchors come packaged with 100 pcs per box and are designed for fastening items to concrete.
- Bit size 1/4"
- Minimum embedment See PDF
- Thread Length 15/16"
- Zinc plated for indoor use
- Do not use in vibratory loads
- Packaged with zinc plated nuts and washers
- 1/4" inch diameter x 1-3/4" inch long
- Code listed under IBC/IRC for cracked and uncracked concrete per ICC-ES ESR-3037
- Code listed under IBC/IRC for masonry per IAPMO UES ER-240
- Qualified for static and seismic loading conditions (seismic design categories A through F)
- Spacing must be a minimum of 10 anchor diameters
- Free freight on all orders over $25.00
|Thread Type||1/4" - 20|
|2000 PSI Concrete - Pull-Out (lbs.) *||877|
|2000 PSI Concrete - Shear (lbs.) *||1082|
|Material||Carbon Steel Zinc Plated|
|Minimum Edge Distance||1-1/4"|
|Maximum Fixture Thickness||3/8"|
|Minimum Fixture Hole Diameter (In Place)||5/16"|
|Minimum Fixture Hole Diameter (Hole Spotted)||1/4"|
|Length ID Code||A|
|Maximum Torque||5 - 10 ft./lbs.|
|Wrench Size For Nut||7/16"|
|Length Measurement||End to End|
|Brand Name||Simpson Strong-Tie|
The anchor is made from Carbon Steel, and is Zinc Plated. This anchor is designed for use in Concrete only, and should never be used in block or brick base material.
The anchor is designed for use in a dry environment.
Hole Diameter/Bit Diameter
The anchor requires a 1/4" hole to be drilled in the base material (Concrete only). The hole should be drilled with carbide tipped bit that meets ANSI standards and used in a hammer drill.
Diameter of Anchor
The diameter of the anchor is 1/4".
The length of the anchor is 1-3/4"
The threads on the anchor are national coarse threads that measures 1/4" with 20 threads per inch, commonly referred to as 1/4"-20.
The length of the threads on the anchor is 15/16" in length.
The anchor is packaged with 100 pieces per box and is packaged with the correct number and diameter of nuts and washers.
Depth of Hole
The depth of the hole that is required for the anchor should be a minimum of 1/2" deeper than the anchor will penetrate the concrete. This will allow space for dust created during the installation process to fall, which will prevent the anchor from bottoming out in the hole before full penetration into the concrete.
The size of the wrench required to turn the nut to set the anchor is 7/16".
To be set properly in the concrete, the anchor must be torqued to between 4 ft./lbs.
When a bolt is used in conjunction with the anchor, the length of the bolt needed is determined by considering these factors:
- Flush With Concrete - when the anchor is set flush with the surface of the concrete, add the thickness of the material being fastened to the thread length of 15/16", and then add the space for any washers used.
Below Surface of Concrete - add the depth below the surface of the concrete to the thickness of the material being fastened, then add the space for the washer, and, finally, add 15/16" for the thread engagement.
The anchor is stamped with the letter A on the threaded end to allow inspection of the anchor after installation. The letter "A" designates an overall length of the anchor as between 1-1/2" up to, but not including 2" in length.