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5/8" x 8-1/2" Stainless Steel Wedge Anchor, 20/Box

$225.40 per Box of 20
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   Availability: In Stock
  Questions? Email Mike

SKU: WAS58812

CONFAST® - 5/8" x 8-1/2" Stainless Steel Wedge Anchor

The 5/8" x 8-1/2" Stainless Steel Wedge Anchor (20 pcs per box) are designed for attaching to concrete. Every order will be shipped directly from the Cleveland, Ohio warehouse for delivery in 1 to 3 days.

  • Bit size 5/8"
  • Minimum embedment 2-3/4"
  • Thread Length 4"
  • 304 stainless steel for use in wet environments
  • Not acceptable for use in a vibratory load
  • Packaged with 304 stainless steel nuts and washers
  • 5/8" inch diameter x 8-1/2" inch length
  • Must space anchor a minimum of 5" from each other
  • Every order over $25.00 ships for free
Products specifications
Bit Size 5/8"
Minimum Embedment 2-3/4"
Thread Length 4"
2000 PSI Concrete - Pull-Out (lbs.) * 3749
2000 PSI Concrete - Shear (lbs.) * 6198
Type Male
Primary Concrete only
Diameter 5/8"
Length 8-1/2"
Material 304 Stainless Steel
Environment Wet
Box Qty 20
Minimum Edge Distance 3-1/8"
Maximum Fixture Thickness 5-1/8"
Minimum Fixture Hole Diameter (In Place) 7/8"
Minimum Fixture Hole Diameter (Hole Spotted) 5/8"
Length ID Code O
Maximum Torque 75 - 90 ft./lbs.
Wrench Size For Nut 15/16"
Length Measurement End to End
Brand Name CONFAST

The anchor is made from 304 Stainless Steel. 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 Wet environment.

Hole Diameter/Bit Diameter
The anchor requires a 5/8" 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 5/8".

Length Anchor
The length of the anchor is 8-1/2"

Thread Type
The threads on the anchor are national coarse threads that measures 5/8" with 11 threads per inch, commonly referred to as 5/8"-11 .

Thread Length
The length of the threads on the anchor is 4" in length.

The anchor is packaged with 20 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 2-3/4". Therefore, the anchor must be installed so that a minimum of 2-3/4" 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 5-1/8". This will ensure that the minimum embedment of 2-3/4" will be met.

Fixture Hole Diameter
The hole in the fixture or material being fastened must be larger than the designated diameter of the anchor. The 5/8" diameter anchor requires the hole in the fixture to be 7/8".

Wrench Size
The size of the wrench required to turn the nut to set the anchor is 15/16".

Torque Value
To be set properly in the concrete, the anchor must be torqued to between 75 - 90 ft./lbs.

Spacing between Anchors
Each anchor must be spaced a minimum distance of 6-1/4" from each other when measured center to center.

Edge Distance
It is very important not to install the anchor any closer than 3-1/8" from an unsupported edge of the concrete.

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 4", 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 4" for the thread engagement.

The anchor is stamped with the letter O on the threaded end to allow inspection of the anchor after installation. The letter "O" designates an overall length of the anchor as between 8-1/2" up to, but not including 9" in length.

Holding Values - Ultimate Load Values in 2000 PSI Concrete

Anchor Size

Minimum Embedment

Pull-Out (lbs.)

Shear (lbs.)

5/8" x 8-1/2"





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. *