Review on 🔩 ITW Brands 24292 Diameter Concrete: Superior Performance for Concrete Projects by Paul Andrews

Slightly more expensive item but worth it for the time saved. Screw anchors use the smallest possible hole for a given strength. I used them to attach a monitor arm to a stone block wall. I found a 3/8" socket handy for driving them into the holes. They have a peel strength of about 3,000 pounds. A 1/4 pull out is considered a safe working load. That leaves only 750 pounds. It's not much , but far better than any other 5/16" anchor of this size. Proper threading requires a 1/4" diameter hole. If you hit a big chunk of aggregate (stone), I push it back a bit so the threads double cut and the anchor head doesn't twist. A hammer drill or hammer drill is a must. If this is a problem, buy one. Drilling a sufficiently deep hole with a simple rotary drill takes an hour. A masonry drill is also a must. HSS robots become dull instantly beyond repair. I like hard materials so I overdid it a bit with the anchors. Actual unthreaded shank diameter is approximately 1/4 inch in case the reader is doing shear calculations. It's just a very good anchor. I am completely satisfied! And these are the best parts I've ever seen: https://www.amazon.com/Masonry-CONCRETE-CINDERBLOCK-Industrial-Strength/dp/B07DQRDPT7/ref=mp_s_a_1_2_sspa?crid=6WVNZ582ROU6&dchild=1&keywords=masonry+drill+ bit+ set&qid=1635718171&sprefix=masonry+%2Caps%2C695&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyS1MxMk9BTVo4MlRQJmVuY3J5cHRlZElkPUEwNTc5NDEyNEJPSk9aWEJLS1RFJmVuY3J5cHRlZEFkSWQ9QTA0NTgwNzUzVjZIREJZUThBVk5OJndpZGdldE5hbWU9c3BfcGhvbmVfc2VhcmNoX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=