B-Line Eaton series fastener hardware and accessories, Light to medium duty anchor for use in concrete,1⁄4" x 3-3⁄4", Thread design for greater stabil

It's a hex head concrete screw, used as a light to medium duty anchor in concrete. You drive it directly into a pre-drilled hole in the concrete, so no expansion shield, sleeve or plastic plug is needed. The thread form is cut for added stability and grip in the base material. Typical use is anchoring strut, straps, boxes and other electrical supports to a concrete deck or wall.

No. It's classed as a light to medium duty concrete anchor, which covers electrical supports, strut runs, straps and similar hardware. For heavy or engineered structural loads, or anywhere a seismic calculation governs, step up to a wedge anchor or a heavy duty screw anchor with published load data instead.

3.75 inches overall. Subtract the thickness of whatever you are fastening down to work out your embedment in the slab, and drill the hole deeper than the embedment so drill dust has somewhere to go. For thin strut or a strap, that length gives you plenty of thread in the concrete; for thicker assemblies check that enough screw is left to bite.

It is UL Listed, which is what inspectors look for when the fastener is carrying electrical support hardware such as strut, conduit straps or box mounts on concrete. Worth noting if you are specifying fasteners for an institutional or code-inspected job.

It's specified as an anchor for concrete. Hollow block and brick behave very differently from solid concrete under a screw anchor, so for those substrates use a fastener rated for that base material rather than assuming this one carries over. In solid poured concrete it's rated light to medium duty.

Order Eaton B-Line ACS-25-375H. That's the manufacturer part number for the hex head concrete screw version at 3.75 inches long; the ACS series uses the same style of numbering across other lengths, so confirm the suffix matches the length you need.

Hex head, so it drives with a socket or nut setter in an impact driver, not a screwdriver bit. That's the practical advantage of the hex head version: you can run them fast off an impact and the head won't cam out the way a slotted or Phillips head can under torque in concrete.