1/2" x 3" Zinc Plated Large Diameter Concrete Screw Actual Thickness 9/16"(14mm) for Anchoring to Masonry, Brick or Block (10 pcs)

Bought these to use for anchoring a steel post to my concrete patio for a sliding awning. Quality wise, the bolts were fantastic in my opinion. The only issue I had was the post did not have 3/8 holes, instead they were about 1/4 which I had already anticipated. These were intended as an upgrade over the anchors the awning included as I did not trust them to hold long term. I opened the holes on the post to 1/2 to account for the threads which would catch the steel if the hole was 3/8. Used sds to pre drill 4 holes in the concrete at 3/8"w to 5"d, cleaned out the holes of dust, and used my cordless impact to drive the anchors into the concrete. One note - included nut driver didn't appear impact ready as it snapped at the base on the first bolt so I just used a deep well socket and had zero issues. All 4 drove in nice and smooth, made sure not to continue trying to drive it once they pulled flush with the steel. Post is very stable, anchors are definitely doing their job well. No complaints aside from the nut driver included breaking, but not a big deal, most important thing is the anchors functioning as intended. Would definitely recommend, good value for the product. Will be using these next time I need to anchor something into concrete.

Received items as described and in good condition. Also Received items quickly. Nice product for the price paid.

Perfect

Good price and works great

3/8" x 5" I made certain to run my bit in and out several times to ensure hole diameter, then air to blow out. 18v battery impact gun had no problem installing to hold down 1-1/2" bottom plate of walls on slab concrete. Used 20 with no failures. These are described as 13 grade with similar pullout to redheads of the same size, however, redheads (Tapcon) are rated 9 grade. 9 grade will have less torque strength but better shear. If weight is at max load for your fasteners and shear is your concern (such as wall mounted) you may want to consider the lesser grade. Otherwise upgrade to next size. I am purchasing another 60 today. Absolutely works for my install.

I used these to anchor the new 6 x 6 wood posts on the car port. Just be sure to run the drill bit in and out of the hole to clear the hole of debris.

These are not sized as advertised and quality is not there. I ordered 5/16ths, used a slightly smaller masonry bit to make sure they hold strong, the threads stripped. Tried again with a 5/16ths masonry bit, threads still stripped while having a loose fit, HOW?! Don't waste your money.

These bolts are life savers. I do handyman work and I put up lots of tv outside customers lanai’s. These bolts are weather proof and make it a breeze to attach to concrete walls. It’s so simple and they even give you the impact driver. I’m on my third order. Will definitely use nothing but these going forward