1/4 in. x 4 in. Phillips-Flat-Head Concrete Anchors (25-Pack)

It depends on how thick your brick is, if it is a solid concrete poured wall or filled block. The weight it will hold will be up to about 500 lb easily. The sheer rating on the anchor is up to about a thousand pounds.

I did not use wahsers. The worked great without them.

Hi Erich, this is Nick from the Tapcon Product team. A longer Tapcon must be used for this application to achieve proper embedment depth into the wall.

Firstly, I assume you're dealing with household (kitchen type) cabinets. Your question has to do with what affects shear strength of Tapcons. Data necessary to resolve your dilemma can be found at http://www.barnhillbolt.com/specs/TapconPerform.htm OR https://www.itwredhead.com/portals/0/fmproductcatalog/documents/products/37/tapcontechnicaldata.pdf OR https://www.confast.com/technical-specifications-for-tapcon-concrete-screws/ OR https://images.homedepot-static.com/catalog/pdfImages/c0/c063f0ba-e028-42fd-9652-a519dfcf1198.pdf. Simply put, the weight of your cabinet sections determines the number of properly embedded Tapcons you need. This (conservatively) neglects friction imposed by clamping forces (from properly torqued screws) drawing cabinet backs against the wall finish. Of course, cabinet backs must be robust enough to resist those shear (downward sliding) forces. At this point you'll want to consider whether the screw heads will pull through due to eccentricity. (Distance to center-of-gravity from wall will cause overturning moment producing prying action away from wall.) Washers, anyone? I'm confident the tensile (pull-out) capacity of the screws will be adequate for household cabinets. Check the referenced tables. Industrial shelving would be a different matter. If the sliding criterion is not met, you can install a shear rail (cleat) beneath the cabinets which is akin to permanentizing the alignment rail you used to set their height. Admittedly, there is little information about the effect of cantilever (shank length under the screw head assumed not supported by the wall finish). However bending deflection, due to same, somewhat is limited by the compressive strength of those finish materials. It would be interesting to pose this esoteric to the manufacturer and request a table of load factors. But, unless I were hanging mission-critical or vibrating / shock-loaded equipment on a steel plate (and I'd use undercut anchors or cast-in-place embedments for that), I'd rely on the product safety factor and my rounded up number of selected fasteners to cover that eventuality. Also, for a few cents more, one can use the next bigger size fastener for added peace of mind. If you have a scientific bent, test load the installed cabinets. And, by the way, when calculating the fastener layout, don't neglect the weight of contents - pantry provisions, dinnerware and stoneware are not light!

I bought these a few weeks ago to secure several pieces of plywood to some brick surfaces. After pre drilling the pilot holes with the recommend drill bit size listed on the outside of the container in the instruction area, the holes were too large and the screws could not grip the inside of the hole and the plywood is still loose. I was very disappointed.

If you are anchored in concrete block I wouldn't recommend removing and reinserting. The block is not homogeneous and chances are you will never get it to seat again. Solid / poured concrete might be a different story but block, no.

The Tapcons would only be needed if the wall behind the cabinets is brick, concrete, or adobe (even if finished with sheetrock over furring strips where the furring wouldn't support the cabinet weight). The 4" Tapcons would allow enough purchase in the masonry to support the cabinet.

Since we don’t know the strength of the material, we can only reference (2) documents for your use. These documents outline conditions such as spacing requirements, etc. to get certain loads. 1. For Concrete attachment http://www.itwredhead.com/pdfs/Red_Head_approvals/ESR-2202_revised_March_2015.pdf 2. For Masonry attachment http://tapcon.com/documents/ESR-1671.pdf