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1/2" x 2-3/4" Red Head Trubolt Hot-Dip Galvanized TB4G-1226, 25/Box

$62.03 per Box of 25
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SKU: TB4G1226 MFG#: TB4G-1226
  MFG: ITW/RedHead®

ITW/RedHead® - TB4G-1226 - 1/2" x 2-3/4" Anchor

These anchors come with {M} pcs per box and are designed for fastening to concrete. All orders ship immediately from the Cleveland, Ohio warehouse for delivery in 1 to 3 days.

  • Bit size 1/2"
  • Minimum embedment 2-1/2"
  • Thread Length Fully Threaded
  • 304 stainless steel clip
  • Hot-Dipped Galvanized for use in moist environments
  • For use in non-vibratory loading applications
  • Packaged with hot-dipped galvanized nuts and washers
  • 1/2" thick x 2-3/4" overall length
  • Spacing between anchors is a minimum of 10 anchor diameters
  • Free shipping on orders over $25.00
Products specifications
Bit Size 1/2"
Minimum Embedment 2-1/4"
Thread Length 1-1/4"
Thread Type 1/2" - 13
2000 PSI Concrete - Pull-Out (lbs.) * 2999
2000 PSI Concrete - Shear (lbs.) * 5564
Type Male
Primary Concrete only
Diameter 1/2"
Length 2-3/4"
Material Galvanized
Environment Damp
Box Qty 25
Minimum Spacing 5"
Minimum Edge Distance 2-1/2"
Maximum Fixture Thickness 1/8"
Minimum Fixture Hole Diameter (In Place) 5/8"
Minimum Fixture Hole Diameter (Hole Spotted) 1/2"
Length ID Code C
Maximum Torque 50 - 60 ft./lbs.
Wrench Size For Nut 3/4"
Length Measurement End to End
Brand Name CONFAST

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 moist environment.

Hole Diameter/Bit Diameter
The anchor requires a 1/2" 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 1/2".

Length Anchor
The length of the anchor is 2-3/4"

Thread Type
The threads on the anchor are national coarse threads that measures 1/2" with 13 threads per inch, commonly referred to as 1/2"-13.

Thread Length
The length of the threads on the anchor is Fully Threaded in length.

The anchor is packaged with 25 pieces per box and is packaged with the correct number and diameter of nuts and washers.

Minimum Embedment
The minimum anchor embedment into the concrete is 2-1/2". Therefore, the anchor must be installed so that a minimum of 2-1/2" of the anchor is embedded into the concrete.

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.

Fixture Hole Diameter
The hole in the fixture or material being fastened must be larger than the designated diameter of the anchor. The 1/2" diameter anchor requires the hole in the fixture to be {MinimumFixtureHoleDiameter(InPlace)}.

Wrench Size
The size of the wrench required to turn the nut to set the anchor is 3/4".

Torque Value
To be set properly in the concrete, the anchor must be torqued to between 45 ft./lbs.

Bolt Length
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 Fully Threaded, 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 Fully Threaded for the thread engagement.

The anchor is stamped with the letter C on the threaded end to allow inspection of the anchor after installation. The letter "C" designates an overall length of the anchor as between 2-1/2" up to, but not including 3" in length.

Holding Values - Ultimate Load Values in 2000 PSI Concrete

Anchor Size

Minimum Embedment

Pull-Out (lbs.)

Shear (lbs.)

1/2" x 2-3/4"




1/2" x 2-3/4" hot dipped galvanized anchor - concrete - park bench


Product/Company Reviews

* The figures above indicate average ultimate tension and shear failure values. A safety factor of 4:1 or 25% of ultimate value is generally accepted as a safe working load. Reference should always be made to applicable codes.

* The bits are recommended by diameter and may not necessarily be the length needed for your application. Please make sure the usable length will work for your application. *