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7/8" x 8" Wedge-All® Anchor, 5/Box

$61.23 per Box of 5
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  Questions? Email Mike

SKU: WA-87800 MFG#: WA-87800

Simpson - WA-87800 7/8" x 8" Wedge-All® Anchor

These anchors come packaged with 5 pcs per box and are designed for fastening items to concrete.

  • Bit size 7/8"
  • Minimum embedment 3-7/8"
  • Thread Length 2-1/8"
  • Zinc plated for indoor use
  • Do not use in vibratory loads
  • Packaged with zinc plated nuts and washers
  • 7/8" inch diameter x 8" inch long
  • Spacing must be a minimum of 10 anchor diameters
  • Free freight on all orders over $25.00
Products specifications
Bit Size 7/8"
Minimum Embedment 3-7/8"
Thread Length 4"
Thread Type 7/8" - 9
2000 PSI Concrete - Pull-Out (lbs.) * 6294
2000 PSI Concrete - Shear (lbs.) * 13687
Type Male
Primary Concrete only
Diameter 7/8"
Length 8"
Material Carbon Steel Zinc Plated
Environment Dry
Box Qty 5
Minimum Spacing 8-3/4"
Minimum Edge Distance 4-3/8"
Maximum Fixture Thickness 3-1/4"
Minimum Fixture Hole Diameter (In Place) 1-1/8"
Minimum Fixture Hole Diameter (Hole Spotted) 7/8"
Length ID Code N
Maximum Torque 200 - 250 ft./lbs.
Wrench Size For Nut 1-5/16"
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 7/8" 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 7/8".

Length Anchor
The length of the anchor is 8"

Thread Type
The threads on the anchor are national coarse threads that measures 7/8" with 9 threads per inch, commonly referred to as 7/8"-9.

Thread Length
The length of the threads on the anchor is 2-1/8" in length.

The anchor is packaged with 5 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 3-7/8". Therefore, the anchor must be installed so that a minimum of 3-7/8" 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.

Maximum Fixture Thickness
The maximum fixture thickness or the maximum thickness of the material being fastened for a anchor is 3-1/4". This will ensure that the minimum embedment of 3-7/8" will be met.

Wrench Size
The size of the wrench required to turn the nut to set the anchor is 1-5/16".

Torque Value
To be set properly in the concrete, the anchor must be torqued to between 200 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 2-1/8", 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 2-1/8" for the thread engagement.

The anchor is stamped with the letter N on the threaded end to allow inspection of the anchor after installation. The letter "N" designates an overall length of the anchor as between 8" up to, but not including 8-1/2" in length.


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. *