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1/4" x 1-3/4" Hex Head CONFAST® Concrete Screw, 100/Box

$9.99 per Box of 100
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SKU: CSH14134

CONFAST® - 1/4" x 1-3/4" Hex Head CONFAST® Concrete Screw

The CONFAST® 1/4" x 1-3/4" Hex Head Blue masonry screws are packaged 100 pieces per box with one bit included free of charge. They work well in solid concrete, brick or block, and are designed for indoor atmospheres that are dry. Every order ships from the Cleveland, Ohio warehouse for delivery in the United States within 1 to 3 business days.

  • Bit size 3/16"
  • Minimum embedment 1"
  • 5/16" nut driver nut setter is used for driving the CONFAST® screw
  • Do not exceed 1-3/4" embedment
  • Placement is closer to the edge than expansion type anchors
  • Can be inserted through hole in item being attached
  • Taps threads in masonry
  • 1/4" inch diameter x 1-3/4"inch length (measured from under head)
  • All orders over $25.00 ship for free
Products specifications
Bit Size 3/16"
Minimum Embedment 1"
Thread Length 1-3/4"
Thread Type High-Low
2000 PSI Concrete - Pull-Out (lbs.) * 562
2000 PSI Concrete - Shear (lbs.) * 675
Type Male
Diameter 1/4"
Length 1-3/4"
Material Carbon Steel - Blue Coated
Environment Dry
Box Qty 100
Minimum Spacing 4"
Minimum Edge Distance 3"
Maximum Fixture Thickness 1/4" to 3/4"
Minimum Fixture Hole Diameter (In Place) 5/16"
Minimum Fixture Hole Diameter (Hole Spotted) 5/16"
Head Type Hex Washer
Length Measurement Underneath head
Driver Size 5/16"
Brand Name CONFAST

The anchor is made from Carbon Steel, and is Blue. This anchor is designed for use in Concrete, Block, and Brick.

The anchor is designed for use in a Dry environment.

Head Style
The anchor is a Hex Washer head and is designed to allow the head to sit on top of the surface of the item being attached.

Hole Diameter/Bit Diameter
The anchor requires a 3/16" hole to be drilled in the base material (Concrete, Block, and Brick). The hole should be drilled with carbide tipped bit that meets ANSI standards and used in a hammer drill.

Driver Required
A 5/16" is required for driving the anchor into the base material.

Diameter of Anchor
The diameter of the anchor is 1/4".

Length Anchor
The length of the anchor is 1-3/4"

Thread Length
The length of the threads on the anchor is 1-3/4" in length.

The anchor is packaged with 100 pieces per box and one (1) correct sized carbide bit.

Minimum Embedment
The minimum anchor embedment into the concrete is 1". Therefore, the anchor must be installed so that a minimum of 1" 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 1/4" to 3/4". This will ensure that the minimum embedment of 1" 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 1/4" diameter anchor requires the hole in the fixture to be 5/16".

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

Edge Distance
It is very important not to install the anchor any closer than 3" 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 1-3/4", 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 1-3/4" for the thread engagement.

Holding Values - Ultimate Load Values in 2000 PSI Concrete

Anchor Size

Minimum Embedment

Pull-Out (lbs.)

Shear (lbs.)

1/4" x 1-3/4"




Installing a 1/4" x 1-3/4" Hex Head CONFAST® Concrete Screw
  1. Drill a 3/16" 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" is met.
  3. The hole can be drilled while the fixture is in place. The minimum hole in the fixture for the 1/4" x 1-3/4" Hex Head CONFAST® Concrete Screw is 5/16".
  4. Clean the hole with a wire brush, vacuum, compressed air, or a blow-out bulb.
  5. Insert the point of the 1/4" x 1-3/4" Hex Head CONFAST® Concrete Screw into the hole. Make sure that the screw being installed will penetrate the base material a minimum of 1" but no deeper than 1-3/4".
  6. Using a 5/16" nut driver hex driver for the anchor , turn the screw clockwise, applying slight pressure until the head of the screw is snug against the material being fastened.
  7. Always use proper personal protective equipment per manufacturer's and OSHA instructions.

1/4" x 1-3/4" hex CONFAST - concrete - safety light 1/4" x 1-3/4" hex CONFAST - concrete - decorative light fixture 1/4" x 1-3/4" hex CONFAST - concrete - no parking sign 1/4" x 1-3/4" hex CONFAST - block -lock box


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. *