B-Line Eaton series fastener hardware and accessories, Light to medium duty anchor for use in concrete,1⁄4" x 2-1⁄4", Thread design for greater stabil

It's a hex head concrete screw for light to medium duty anchoring into concrete, the kind of fastener used to hold strut, brackets, straps and box mounts to a slab, wall or deck. The thread form is made for added stability and grip in the base material. Model designation is ACS-25-225H.

Overall length is 2.25 inches. Whatever depth you set in the concrete comes off that total, so figure your embedment first and the balance is what's left for the strap, clip or channel you're fastening through. For thicker stand-off assemblies you'd want a longer screw in the same series.

No shield, sleeve or expansion anchor is involved. A concrete screw like this ACS-25-225H is driven directly into a pre-drilled hole and cuts its own threads in the concrete, so the only extras you need are the correct carbide bit and a socket driver for the hex head. If you need an anchor you can remove and re-set repeatedly in the same hole, a threaded insert or sleeve anchor is the better choice.

No. It's rated as a light to medium duty concrete anchor, so overhead trapeze loads, heavy equipment mounts and seismic bracing call for a heavier anchor such as a wedge or internally threaded rod anchor. Use this one for straps, single-channel clips, box mounts and similar light attachments.

UL Listed, which is what most inspectors and spec writers want to see on the anchors holding electrical supports. It sits in Eaton's B-Line electrical fastener line, so it's intended for conduit, strut and box support work rather than general construction framing.

Order Eaton B-Line ACS-25-225H. That's the single model, a hex head concrete screw at 2.25 inches long, each piece weighing about .016 lb, which is worth knowing if you're ordering by the box for a large slab job.

The stated application for the B-Line ACS-25-225H is concrete. For hollow block or brick, verify the base material against the anchor you buy, because a screw anchor needs solid material at full embedment depth to develop hold, and a hollow cell gives it nothing to thread into.