Metallics CSH20SS Anchors 1/4 X 1-3/4 Hwh 5/16Hd Sl Conc SS (Jar 100)

Yes. The CSH20SS is the stainless steel version of the 1/4 x 1-3/4 concrete screw, which is why electricians reach for it on exterior walls, parking structures, and wet or washdown areas where a plated carbon steel screw would rust out.

With a 1-3/4 inch screw you have limited embedment to work with, so the hole has to be drilled deeper than the length you intend to sink, at minimum a half inch past the embedded depth to take dust. Use a 3/16 inch carbide bit for a 1/4 inch concrete screw, and account for the thickness of the strut, clamp, or box flange you are fastening before deciding how much thread is actually going into the concrete.

Concrete screws of this type are made for solid masonry base material. The CSH20SS at 1/4 x 1-3/4 works in poured concrete, and in block or brick provided you are drilling the solid web or the brick body rather than a hollow cell. In hollow block cells a screw anchor has nothing to bite, and a toggle or sleeve anchor is the right call.

No plug, sleeve, or shield is needed. It is a one piece concrete screw: drill the hole, blow it clean, and drive the screw with a 5/16 inch socket. That also means it can be backed out and the fixture removed without destroying the anchor in the wall.

It is a fastener carried as electrical supply stock, used for mounting conduit straps and clamps, strut, junction and device boxes, disconnects, and light fixture backplates to concrete or masonry. The 1-3/4 inch length suits thin-profile items like straps and box ears; thicker standoffs or channel stacks want a longer screw.

Each jar holds 100 pieces. That is the order unit, which suits MRO shops and contractors stocking a van rather than buying bulk boxes for a single large pour.