1/2" x 4-1/4" Red Head Trubolt Zinc Plated WS-1242, 25/Box

(No reviews yet) Write a Review
In Stock, Ships Today!


ITW/RedHead® - 1/2" x 4-1/4" Red Head Trubolt Wedge Anchor Zinc Plated

The 1/2" x 4-1/4" Red Head Trubolt Wedge Anchor Zinc Plated (25 pieces per box) are designed for fastening items to concrete. All orders will be received in 1 to 3 days when shipped in the Continental United States.

  • Bit size 1/2"  
  • Minimum embedment 2-1/4"  
  • Thread Length 2-3/4"  
  • Zinc plated for indoor use  
  • Do not use in vibratory loads  
  • Packaged with zinc plated nuts and washers  
  • 1/2" inch diameter x 4-1/4" inch long  
  • Spacing must be a minimum of 10 anchor diameters  
  • Free freight on all orders over $25.00  
Products specifications  
Country American Made
Bit Size 1/2"
Box Qty 25
Minimum Embedment 2-1/4"
Wrench Size For Nut 3/4"
Primary  Concrete only
Thread Type 1/2" - 13
Minimum Edge Distance 3-15/16"
Maximum Fixture Thickness 2"
Minimum Fixture Hole Diameter (In Place) 9/16"
Minimum Fixture Hole Diameter (Hole Spotted) 1/2"
Length ID Code  F
Brand Name  ITW/RedHead
Minimum Spacing 7-7/8"
Maximum Torque 55 ft./lbs.
Thread Length 2-3/4"
2000 PSI Concrete - Pull-Out (lbs.) * 3455
2000 PSI Concrete - Shear (lbs.) * 4760
Length Measurement  End to End
Diameter 1/2"
Length 4-1/4"
Material  Carbon Steel Zinc Plated
Environment  Dry
Type  Male
* Values shown are average ultimate values and are offered only as a guide and are not guaranteed. A safety factor of 4:1 or 25% is generally accepted as a safe working load
Application Video  

Installation Video  
Installing a 1/2" x 4-1/4" Red Head Trubolt Wedge Anchor Zinc Plated 
  1. Select a carbide drill bit with a diameter equal to the anchor diameter. Drill a hole at least 1/4” deeper than nominal anchor embedment. 
  2. Clean hole with pressurized air or vacuum to remove any excess dust/debris. 
  3. Using the washer and nut provided, assemble the anchor, leaving nut one half turn from the end of the anchor to protect threads. Drive anchor through fixture to be fastened until washer is flush to surface of fixture. 
  4. Expand anchor by tightening nut to the specified setting torque – see torque table (approx3 to 5 full revolutions). 
  5. Warning! Use in concrete ONLY. Not recommended for use in lightweight masonry such as block or brick. 
  6. Warning! Always wear safety glasses and other necessary protective devices or apparel when installing or working with anchors. 
  7. Caution: Use of core drills is not recommended to drill holes for use with this anchor. 
  8. Do not use an impact wrench to set or tighten the anchor. Not recommended for use in concrete which has not had sufficient time to cure. 
  9. The use of carbide drill bits manufactured with ANSI B212.15 drill bit diameter requirements is recommended for installation of this anchor. Anchor spacing and edge distance (anchor installation locations) are the responsibility of the engineer of record. 
  10. Installing product in oversized hole is not recommended. Product will not set properly or achieve full designed load in oversized hole. 

Application Photos  
1/2" x 4-1/4" zinc plated wedge anchors - concrete - painted post
View AllClose

Additional Information

Bit Size:
Minimum Embedment:
Thread Length:
Concrete only
Thread Type:
1/2" - 13
Carbon Steel Zinc Plated
Box Qty:
Maximum Fixture Thickness:
Minimum Fixture Hole Diameter (In Place):
Minimum Fixture Hole Diameter (Hole Spotted):
Length ID Code:
Wrench Size For Nut:
Length Measurement:
End to End
Brand Name:
View AllClose