B-Line Eaton series fastener hardware and accessories, Engineered with tools to optimize performance,1/4" x 2-3/4",Concrete screws,275F

Yes. The ACS-18-275F concrete screw is UL Listed, which is what most inspectors and institutional specs want to see on fasteners supporting electrical raceway and equipment.

No. It's a concrete screw, cut to thread into a drilled hole in concrete or solid masonry. In hollow block, drywall, or wood the threads have nothing to bite into and the anchor will not hold a rated load. Use a toggle or hollow-wall anchor for drywall and a wood screw or lag for framing.

At 2-3/4 inches overall, the screw has to cover the thickness of whatever you're fastening plus embedment into the concrete. Through a typical 1-5/8 inch channel or a thin bracket you still have well over an inch of thread going into the slab; through thicker stacked hardware you lose that margin fast, so measure your fixture thickness and subtract it from the 2-3/4 inches before you decide this is the right length.

Order model ACS-18-275F. The ACS prefix is the Eaton B-Line concrete screw line, and 275 is the 2-3/4 inch length, so if you need a shorter or longer anchor you're looking at a different length code in the same ACS family.

Each ACS-18-275F is a single concrete screw weighing .018 lb, so a carton count is essentially pure fastener weight. For a contractor pricing out a job, that unit weight is useful for working out shipping on bulk counts.