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Concrete Anchors & Fasteners is Our Specialty   Questions? Contact Mike   

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5/16" x 2-3/4" Strike Anchor, 100/Box

   Availability: In Stock
  Questions? Email Mike

$118.00 per Box of 100
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Every diameter of the 5/16" x 2-3/4" Strike Anchor are in stock; Purchase on line for huge savings; all orders ship free freight.
SKU: SA516234


Customer Reviews

CONFAST® - 5/16" x 2-3/4" Strike Anchor

The 5/16" x 2-3/4" Strike Anchor is for use in solid concrete. and should never be used in block, brick or other masonry materials. The anchor is yellow zinc plated for improved rust resistance. Orders are ready to ship the same day they are received. Orders over $25.00 will ship with free freight from Cleveland, Ohio.

  • Bit size 5/16"
  • Minimum embedment 1-1/4"
  • Thread Length 1"
  • For indoor, dry environment applications
  • Packaged with nut and washer
  • Preset nut and washer for the desired embedment
  • Visual Inspection possible
  • Drive pin manufactured from hardened steel
  • All online orders over $25.00 qualify for free freight
Products specifications
Bit Size 5/16"
Minimum Embedment 1-1/4"
Thread Length 1"
Thread Type 5/16" - 18
2000 PSI Concrete - Pull-Out (lbs.) * 1050
2000 PSI Concrete - Shear (lbs.) * 2250
Type Male
Primary Concrete only
Diameter 5/16"
Length 2-3/4"
Material Carbon Steel Yellow Zinc
Environment Dry
Box Qty 100
Minimum Edge Distance 1-9/16"
Maximum Fixture Thickness 1-3/16"
Minimum Fixture Hole Diameter (In Place) 3/8"
Minimum Fixture Hole Diameter (Hole Spotted) 5/16"
Wrench Size For Nut 1/2"
Length Measurement End to End
Brand Name CONFAST®

The 5/16" x 2-3/4" Strike Anchor is made from Carbon Steel, and is Yellow Zinc. 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 an indoor, dry environment.

Hole Diameter/Bit Diameter
The 5/16" x 2-3/4" Strike Anchor requires a 5/16" 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 5/16" x 2-3/4" Strike Anchor is 5/16".

Length Anchor
The length of the anchor is 2-3/4", and is measured as an overall length of the anchor from end to end.

Thread Type
The threads on the 5/16" x 2-3/4" Strike Anchor are national coarse threads that measures 5/16" with 18 threads per inch, commonly referred to as 5/16"-18.

Thread Length
The length of the threads on the anchor is 1" in length.

The 5/16" x 2-3/4" Strike Anchor is packaged with 100 pieces per box and is packaged with the correct number and diameter of nuts and washers.

Minimum Embedment
The anchor minimum embedment into the concrete is 1-1/4". Therefore, the anchor must be installed so that a minimum of 1-1/4" of the anchor is embedded into the concrete.

Maximum Fixture Thickness
The maximum fixture thickness or the maximum thickness of the material being fastened for a 5/16" x 2-3/4" Strike Anchor is 1-3/16". This will ensure that the minimum embedment of 1-1/4" 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 5/16" diameter anchor requires the hole in the fixture to be 3/8".

Wrench Size
The size of the wrench required to turn the nut to set the 5/16" x 2-3/4" Strike Anchor is 1/2".

Spacing between Anchors
Each anchor must be spaced a minimum distance of 3-1/8" from each other when measured center to center.

Edge Distance
It is very important not to install the 5/16" x 2-3/4" Strike Anchor any closer than 1-9/16" from an unsupported edge of concrete.

Holding Values - Ultimate Load Values in 2000 PSI Concrete

5/16" x 2-3/4" Strike Anchor Size

Minimum Embedment

Pull-Out (lbs.)

Shear (lbs.)

5/16" x 2-3/4"




Product Information


Part number

Quantity per Box

5/16" x 2-3/4" Strike Anchor



Installing a 5/16" x 2-3/4" Strike Anchor
  1. Drill a 5/16" hole into the concrete using a carbide-tipped bit that meets ANSI Standards B212.15.
  2. Drill the hole a 1/2" deeper than the anchor will penetrate the concrete, making sure the minimum embedment requirements of 1-1/4" is met.
  3. The hole can be drilled while the fixture is in place. The minimum hole in the fixture for the 5/16" x 2-3/4" Strike Anchor is 3/8".
  4. Clean the hole with a wire brush, vacuum, compressed air, or a blow-out bulb.
  5. Put the nut and washer on the 5/16" x 2-3/4" Strike Anchor, making sure the nut is on the last threads; this will protect the threads from damage when the wedge anchor is hammered into the hole and into the concrete.
  6. Insert the anchor through the hole in the fixture and into the hole in the base material until the nut and washer are tight against the fixture.
  7. Using a properly sized hammer for the 5/16" x 2-3/4" Strike Anchor, set the pin with a number of square and sharp strikes to the head of the pin until the pin is flush with the top of the anchor. There is no need to torque the nut to set the anchor since the anchor is set with the correct set pin.
  8. Always use proper personal protective equipment per manufacturer's and OSHA instructions.


* 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.

These bits work with the selected anchor
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