CONFAST 3/16" x 1-3/4" Hex Head Concrete Screw Anchor with Drill Bit for Anchoring to Masonry, Block or Brick (100 per Box)

Great product and an amazing value vs what is sold at the big box home improvement stores.

We use about 50 a week and maybe I've broken the head off of 3 of them in the past 4 months. Honestly, that's most likely only because my guy was using too much tork with my impact driver. Going full throttle while the thing is already set. Yea, they might break then. If you know how to use a drill. You shouldn't have an issue. These are good screws. Much better than buying 15 for the same damn price at my local hardware store.

I used a few of these screws into block. I read previous user reviews that expressed concerns with the quality of the screws and the drill bit. I took it easy drilling the holes and had no problems.

Great quality. No breaks so far

The anchors are high quality. I just used about 50 of them securing walls to concrete floor. Concrete is 3000 psi and not a single head broke off. Half price of national brand. Thank you

Super impressed by these! I’ve gotten so much use out of it and made a lot of money from it too. I’ve used these two install downspouts for gutters, I’ve also used it to install vents for dryers on the outside. These guys have no issue going through the material. I would recommend First doing a Masonary bit to go through the area, you are going to be securing, once you’ve done that, though, this guy has no problem and it bites really well. Many other screws seem to not hold very well and eventually come right off the wall. These guys are awesome.

Nice concrete anchors

Had 17 to drop into 6 total 16x16x4 precast cement blocks. Didn't use the bit that came with the screws because I have an SDS hammer Drill. Using a 3/16 x 6" bit that I marked at 3.5" pre-drilled the holes to 3.5" ea. of the 17 screws dropped into the 4" blocks, 3 of screws heads snapped off long before the screw could have bottomed out. Ended up having to drill 6 more holes as I had to move 3 of the 2 hole brackets in order to ensure the fencing structure was properly anchored. Compared to Tapcon, they are slightly less expensive for a similar quantity in my experience, but also slightly less durable. Perhaps quality control is less stringent, so If you hate having additional unwanted holes in your work projects, you should probably consider another brand. If the holes won't be visible and you can afford some errors, then these will work just fine.