B-Line Eaton series fastener hardware and accessories, Heavy and medium duty all purpose anchor, Stainless steel,3⁄8" x 2-3⁄4", Anchors can be install

Through-fixture installation is how this one is meant to go in. The AWA anchor is designed to be installed through the fixture, so you can position the strut bracket, clamp, or base plate, drill through its mounting hole into the concrete, and drive the anchor without pulling the part back off and re-aligning it. That saves a step on overhead strut runs and on repetitive equipment anchoring.

The anchor is 2-3/4 inches long overall, which is what limits how deep it can sit. Subtract the thickness of the fixture you are anchoring through plus the nut and washer stack, and what remains is your embedment into the concrete, so on a thick base plate you lose usable depth fast. For anything with a heavy flange or a stacked shim, step up to a longer anchor rather than running this one shallow.

That is exactly where it earns its keep. The B-Line AWA-50-275SS is a stainless steel wedge anchor, so it holds up in damp, washdown, coastal, and exterior concrete work where a plain zinc-plated carbon steel anchor will bleed rust down the wall and lose section over time. For dry interior mechanical rooms a plated carbon anchor is usually all that is required, so specify stainless where moisture, chemical exposure, or a stainless fixture is involved and you do not want dissimilar metals in contact.

UL Listed, yes. The AWA-50-275SS carries a UL Listing, which is what an institutional or government inspector will want to see when the anchor is holding conduit strap, strut, cable tray hanger, or luminaire support in a commercial building. That matters on projects where every component in the support path has to be a listed part.

Wedge anchors like the B-Line AWA are for solid concrete. The expansion clip needs a solid, uniform base material to bite into, so hollow CMU, brick, grout-filled block with voids, and stone will not give a reliable pull-out value. For hollow block, use a screw anchor or a toggle-type fastener suited to the void instead. Poured concrete slab, deck underside, or a solid concrete wall is where this one belongs.

The B-Line AWA is catalogued as a heavy and medium duty all purpose anchor, which is why facilities and MRO buyers use it as a single line item across conduit support, strut, and equipment bases rather than stocking several styles. Pair it with a longer version of the same anchor for thick base plates and you cover most concrete anchoring on a site with one product family.

Order it as B-Line (Eaton) part number AWA-50-275SS. That number identifies the stainless steel version, and getting it right matters because the same AWA family is sold in plated carbon steel as well, which looks nearly identical in the bin but will corrode outdoors.