Tapcons into concrete

Tapcons into concrete DEFAULT

Installing Tapcon Concrete Screws

Purchase Tapcon Anchors

There are a number of issues that need to be addressed when installing Tapcon® concrete screws. Trying to install Tapcons without consideration of these issues will decrease the chances of a successful fastening process.

Base Materials

Tapcons can be installed in concrete, brick, block and in the mortar joints between the brick and block. The harder the base material, the less embedment is required to attain sufficient holding values. The minimum embedment for a Tapcon® concrete screw is 1” and the maximum embedment is 1-3/4”. The holding values of the screw are dependent on the quality of the base material. In applications where the screw is being installed into the mortar joint, the holding values are dependent on the quality and quantity of the mortar in the joint.

Diameter of Hole

Hole diameter is critical when installing Tapcons. The tolerance between the hole diameter and the diameter of the Tapcon® screw being used is very tight and any variations will affect the holding values. Each diameter of concrete screw has a specific diameter carbide drill bit that must be used for installation. The 3/16” diameter screw requires a 5/32” hole and the 1/4” requires a 3/16” hole. The hole must be drilled using a hammer drill with a carbide tipped bit meeting ANSI standards. A bit that meets ANSI standards will ensure that the hole diameter will meet the requirements of the Tapcon®.

Depth of Hole

The depth of the hole that a Tapcon® concrete screw will be installed into is critical. The hole must be drilled 1/4” deeper than the screw will penetrate. This extra space at the bottom of the hole allows for an area for the dust created during the tapping process to fall without impacting installation. If enough space is not created during the drilling process, space may fill up with dust. The concrete screw taps threads into the base material and the screw could bottom out and prevent full installation. This situation may also lead the concrete screw to become bound in the hole and unable to be removed or inserted deeper.

Length of Tapcon® Concrete Screw

The overall length of the Tapcon® concrete screw chosen for any particular application is very important. Different length concrete screws are used depending on the thickness of the material being fastened. The screws require a minimum of 1” embedment and a maximum embedment into the base material of 1-3/4”. To determine the minimum length of concrete screw required for any job, add the thickness of the material being fastened plus 1”. The maximum length that can be used is determined by adding the thickness of the material plus 1-3/4”. Any length that falls between the numbers obtained should work in the application.

Measurement of Tapcon® Concrete Screw Lengths

Flathead Tapcon® concrete screws are measured as an overall length since they are countersunk, which means that the whole length of the screw will be countersunk in the fixture and embedded into the base material. Hex headed Tapcons are measured from under the head because the head will remain outside the fixture being fastened.

Head Styles

Tapcons come in two different head styles that are designed for different types of applications. The full description of the flat-headed screw is a flat countersunk Phillips drive. The 3/16” diameter flat head requires a #2 Phillips driver and the 1/4” diameter flat head requires a #3 Phillips driver. The hex head is a hex washer slotted head that is driven in by using a nut driver. The nut driver for the 3/16”diameter Tapcon™ concrete screw needs to be 1/4”. For the 1/4” diameter concrete screw, it needs to be 5/16”.

Standard vs. Stainless Steel Concrete Screws

The standard blue Tapcon® is suitable for use in indoor applications where moisture is not present. Standard blue Tapcons are coated with a blue Climaseal® coating that provides good rust resistant. The stainless steel screw is made from a 410 stainless steel and is coated with a silver Climaseal® designed for applications where added rust resistant is required.

Tapcon® Concrete Screw Installation Steps

1. Using a hammer drill and a carbide tipped masonry bit meeting ANSI standards, drill a hole the correct diameter required for the diameter of the screw that is being installed. Make sure that the depth of the hole will be a minimum of 1/2” deeper than the Tapcon® concrete screw will penetrate.

2. With a wire brush, compressed air or vacuum clean out the hole of all dust created during the drilling process.

3. Align the hole in the fixture over the hole in the base material.

4. Insert the concrete screw through a hole in the fixture and into the hole in the base material.

5. Using a wrench or drill, rotate the screw until the head of the concrete screw is tight against the surface of the fixture. Make sure that the screw is not over-torqued as this may strip the threads in the base material and cause it to spin in the hole.

if you still have any questions about Tapcons, take a look at these Tapcon® FAQs.

Purchase Tapcon Anchors

There are a number of issues that need to be addressed when installing Tapcon® concrete screws. Trying to install Tapcons without consideration of these issues will decrease the chances of a successful fastening process.

Jun 30th 2010Mike Pistorino
Sours: https://www.confast.com/articles-how-to-install-concrete-screws/

Why can't I drive this Tapcon into concrete?

Use 1/4" diameter Tapcons (the 3/16" screws are worthless). Drill the hole with a 3/16" masonry drill bit with a hammer drill, one inch farther than the fastener is long, pulling the bit out of the hole several times as you go to clear the spoils, being careful not to ream the sides as you do.

Drive the screw with an impact gun, and stop half a second after you hear a change in pitch, which is when it's bottomed out.

If it doesn't feel right or is still not snug, finish tightening it with a socket wrench. After you drive your ~100th Tapcon, you won't need to do this step, and will seldom snap the heads off the fastener anymore because you were overzealous with the impact gun.

Use hex-head whenever possible, as the Philips type require a hardened #2 bit or you'll break bits left and right.

Assuming you lack an impact driver, and the screw does get stuck half way out, remove the screw (and throw it away if it's a damaged Philips head) and then do ream the sides of the hole a few times and try again. Repeat as necessary, and avoid over reaming before you've tried it again.

  • If at any time it feels like or if you think for one moment that you won't be able to fully sink the screw, stop and take it out before you strip the head, because once you do you're screwed.

I used to use compressed air to blow out the hole before I had an impact driver and sometimes used lube, but since I acquired one I've never had to.

Sours: https://diy.stackexchange.com/questions/104147/why-cant-i-drive-this-tapcon-into-concrete
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Tips and Tricks Tapcon

Installing Tapcon Masonry Screws: Step-by-Step Instructions

Purchase Tapcons

For many homeowners, landscapers, and businesses, keeping their lawn healthy, green, and mowed is a primary goal for their landscaping. Other homeowners cultivate homegrown vegetables, fruits, and herbs. And others nurture all manner of plants and shrubberies and flowers.

No matter what your goal is for your yard, one thing is certain. You’re going to need water—and you’re going to need a hose.

Hose reels come in many styles, from the utilitarian to the decorative. Fastening a hose reel to an exterior brick or concrete slab means that hose will always be where you need it to be, and won’t risk being run over by a car or cluttering the yard.

To fasten a hose reel to brick, as with many other projects, a Tapcon masonry screw may be the fastener of choice.

Tapcon Masonry Screws

Tapcon masonry screws are made for light duty fastening. They are manufactured with special threads that will thread into a predrilled hole in masonry material, such as concrete, concrete block, and brick.

These screws embed into the material by “tapping” the threads through the material surrounding the hole. The tapping of the threads into installation materials requires the threads to be properly cut. Removing the dust and debris from the hole is essential in achieving proper installation. 

1. Get ready to install

  • Before a Tapcon masonry screw can be installed, a hole must be drilled into the masonry.  
  • Use a hammer drill to ensure that the hole has the proper tolerance.
  • The switch on the hammer drill must be in the hammer and rotation mode before starting to drill. The hammer motion breaks up the masonry material and the rotation removes the dust from the hole.
  • Use the properly sized carbide tipped bit.
  • Make sure that the bit meets ANSI standards. This will ensure the hole meets proper hole tolerance. 
  • The carbide bit diameter required for the 3/16” screw is 5/32”. For the 1/4” screw a 3/16” carbide tipped bit must be used.
  • Hole tolerance is critical; using the correct diameter ANSI standard bit with a hammer drill will ensure proper hole size allowing the Tapcon screw to achieve desired holding strength.
  • Determine the correct length of screw to use should before installation. The minimum length screw to use for any specific application is determined by adding the thickness of the material being fastened to the minimum embedment of 1 inch. The maximum length of screw to use is determined by adding the thickness of the material being fastened to 1-3/4 inches.

2. Drill a hole to the proper depth

  • Drilling the hole to the proper depth is critical. 
  • Set the depth gauge provided with the hammer drill to the required depth. If a depth gauge is not available, wrap tape around the bit at the correct embedment depth.
  • When setting the depth gauge or using tape, make sure that the bit is in the most protracted position in the chuck. 
  • The minimum depth of embedment for the Tapcon screw is 1 inch, and the maximum embedment is 1-3/4 inch. 
  • The depth of the hole should be drilled to allow a minimum space at the bottom of the hole of 1/2 inch.  
  • The minimum depth of the hole equals 1 inch plus 1/2 inch or 1-1/2” inches.
  • The maximum hole depth equals 1-3/4 inch plus 1/2 inch or 2-1/4 inches.

3. Prepare the hole for installation

  • Before inserting the screw, clean the hole of all dust and debris that was created during the drilling process.
  • Use a wire brush that is the same diameter as the hole.
  • Use a twisting, turning, and up and down motion with the brush. Vacuum the hole and repeat.
  • Compressed air can be used to clear the hole of all dust, but this creates a lot of dust in the air and may not be suitable for all situations.

5. Install the Tapcon

  • Insert the screw through the fixture and into the predrilled hole in the concrete. 
  • With a rotation drill, drive the screw slowly into the hole. Very little pressure is required. 
  • With the flat head Phillips, a #2 driver is required for the 3/16-inch screw and a #3 driver is needed for the 1/4-inch. 
  • The 3/16” hex head is installed with a 1/4-inch hex driver and the 1/4-inch uses a 5/16” driver.  

Helpful tips

  • Do not over torque the Tapcon, as this may cause it to spin in the hole, which causes the holding value to be lost. Turning the screw by hand the last couple of revolutions can help to prevent this situation.
  • During installation, make sure that the anchor is tight against the surface of the material being fastened. This can be accomplished by turning the screw by hand the last couple of turns.
  • Be cautious of head shearing. Head shearing is caused by any combination of these factors:
  • The hole was not drilled deep enough; the masonry screw is bottoming out in the hole. Drill the hole deeper.
  • The hole was not cleaned out and the debris is filling up the hole, the anchor is bottoming out in the hole. Clean out the hole.
  • Too much torque is being applied. Turn the screw by hand the last couple of revolutions.
  • The base material is so hard that the bit is wearing out and the hole is getting smaller. Try for a shallower embedment or use a different type of fasteners such as a hammer drive anchor or split drive anchor.
  • The embedment depth is too deep for the base material. Try using a shorter anchor.
Sours: https://www.concretefasteners.com/tips-and-tricks-tapcon/

All About Tapcon Screws

Tapcon screws are self-tapping screws used to fasten materials such as metal, wood and foam to masonry or concrete. They are also known as confast screws, masonry screws, self-tapping screws, blue screws, and titens. Tapcon is a brand name that came from part of the definition of this type of screw, “taps its own threads into concrete.”

The first patent of a concrete screw is by Vincent Yotti done in the year 1975. It was designed to be an inexpensive and quickly-installed screw which had a greater strength of holding things in comparison to the other types of concrete anchors. In the United States, Tapcon is often used when referring to any brand of concrete screw, and we will follow that practice in this article.

Tapcons are made of carbon steel or stainless steel. Their color comes from the Blue Climaseal® coating that provides rust and corrosion resistance. A concrete screw does not necessarily have a protective coating just because it is blue; some inferior screws are merely painted blue. Always read the packaging very carefully to be sure you are getting what you want.

How to Use Tapcons

drill and screws

First, mark the spot where the pilot hole will be drilled. If you are installing a fixture of some type, you can drill the pilot hole right through it because tapcons do not require sleeves. Next, pick up your hammer drill and attach the right size drill bit. For the 3/16 inch screw you need a 5/32 inch bit and for the 1/4 inch screw you need a 3/16 inch bit. Bits are smaller than the screws because you are only drilling a pilot hole; the tapcon needs to be able to cut its own threads as it is driven in. The original tapcons come with their own special bit.

Drill the pilot hole at least 1/4 inch deeper than the length of your screw. The minimum you should drive tapcon screws into concrete is one inch and the deepest you can drive them is 13/4 inches. The head will shear off if you try to drive them any deeper. You are making the pilot hole deeper than the screw length so there will be room for the concrete dust to go as the tapcon is cutting threads.


Clean out the pilot hole and put a tapcon screw through the fixture’s or other material’s hole and into the pilot hole. Take a standard drill and put in a driving bit that matches the head of the screw. Then slowly drive the tapcon in. Remember to hold the drill straight and keep an even, steady pressure on it. It takes longer to drive a tapcon into masonry than it does to drive a regular screw into wood, so be patient. Do not place your screws too close together because it can weaken the concrete or masonry if you do.

Depending on the quality of the concrete, you can remove tapcon screws and place them back in the same holes later. However, every time you do this you are reducing the holding values.

Some of the Uses for Tapcon Screws

Some of the things tapcons are used for are: attaching metal lath to a wall before stuccoing; installing vinyl or wood siding over concrete or masonry walls; installing sub-flooring over concrete floors; mounting a flat TV over a brick fireplace; and many more.

Sours: https://www.doityourself.com/stry/all-about-tapcon-screws

Into concrete tapcons

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Everything You Need To Know About Tapcons - How To Install Tapcons \u0026 What To Buy

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