Metallics JTS3121SS Anchors 3/8 X 3-3/4 Wedge Ancr SS (Jar 50)

Yes, the JTS3121SS is a stainless steel wedge anchor, which is why it gets specified for exterior concrete, wet areas, pool decks, and coastal or washdown environments where a plain zinc-plated carbon steel anchor would rust and stain the slab. Stainless also keeps corrosion out of the hole where the anchor is doing the work.

A wedge anchor is a single-piece mechanical anchor for solid poured concrete. You drill, drop it in through the fixture, and tighten the nut, which draws the cone into the expansion clip and wedges it against the hole wall. It is a permanent anchor, so plan on cutting or grinding it flush rather than removing it. For hollow block, brick, or grout-filled CMU, a sleeve anchor or a screw anchor is the better choice, since a wedge anchor needs solid base material to expand against. For removable fastening, use a drop-in anchor with a machine bolt instead.

Wedge anchors are supplied as a complete assembly with the nut and washer already on the threaded stud, so the jar of 50 is everything you need to set them. What is not included is the carbide bit and the hammer drill.

Yes. Metallics catalogs the JTS3121SS on the electrical side of the house, and 3/8 inch is the common size electricians use for hanging Unistrut, trapeze supports, conduit racks, panel backboards, and transformer or disconnect mounts on concrete walls and decks. The stainless version is the one to pick for exterior or damp electrical rooms.