DEWALT 7400SD1-PWR Power-Stud+ Sd1 1/4 X 1-3/4, 100 Pack

Use a 1/4 inch bit. On the Power-Stud+ SD1 the nominal drill bit size matches the anchor diameter, and this anchor is 0.250 inch diameter, so a 1/4 inch carbide bit drills the hole. That also means the anchor can be driven through a standard fixture hole without oversizing the fixture.

Overall anchor length is 1.75 inches, so the embedment into the concrete plus the thickness of whatever you are clamping plus the nut and washer all have to come out of that 1.75 inches. It is a short anchor meant for thin attachments like strut, conduit clamps, junction boxes and light brackets. If you are bolting through a thicker base plate, step up to a longer length in the same 1/4 inch diameter.

The SD1 is carbon steel with zinc plating, which is a dry interior-duty coating. It is fine for indoor slabs, walls and covered mechanical rooms. For exterior exposure, wash-down areas, pools or anywhere it sees standing moisture, specify a stainless or hot-dip version of the anchor instead.

It is a concrete and masonry anchor, so it sets in both. DEWALT also calls out consistent performance in high and low strength concrete, which matters when you are anchoring into older slabs or lightweight pours where a wedge anchor can be inconsistent.

Each Power-Stud+ SD1 is stamped on the head with a length ID code plus an identifying mark, so an inspector or foreman can verify diameter and length after the fixture is bolted down without pulling anything back out. Useful on jobs where anchor length has to be documented.

Order DEWALT part 7400SD1-PWR. That is the 1/4 inch diameter by 1-3/4 inch Power-Stud+ SD1 wedge anchor, zinc plated carbon steel, supplied 100 to a box.

Yes. The design allows follow-up expansion after setting under tensile load, so the wedge continues to grip if the anchor sees pull-out force or if the concrete relaxes slightly around it. That is the practical difference between this style and a simple sleeve anchor that sets once.