Metallics JTS4334D Anchors 1/2 X 3-3/4 Wedge Ancr St-zn U (Jar 50)

Drill 1/2 inch. Wedge anchors use a hole the same nominal diameter as the anchor, so the 1/2 x 3-3/4 inch JTS4334D goes into a 1/2 inch hole drilled with a carbide bit in concrete. Drill the hole deeper than the embedment you need so dust and cuttings have somewhere to go, then drive the anchor until the nut and washer are seated against the fixture.

Wedge anchors like the 1/2 x 3-3/4 JTS4334D are for solid poured concrete. They expand by wedging against the hole wall, so hollow block, brick and mortar joints can blow out or fail to develop any hold. For hollow masonry use a sleeve anchor or a toggle; for grout-filled or solid block, follow the base material the job spec calls out.

The 3-3/4 inch overall length is split between embedment in the concrete and the part sticking out through your fixture plus the washer and nut. With a 1/2 inch anchor you need to leave enough length buried for the wedge to set, so plan on holding down thinner material such as strut channel, equipment feet, or a base plate up to roughly an inch. For a thicker base plate or a leveling grout bed, step up to a longer 1/2 inch anchor.

These are steel with zinc plating, which is a mild indoor corrosion coating. It's fine for dry interior slabs, mechanical rooms, and equipment pads under roof. For exterior slabs, parking structures, pool decks, or anywhere there is standing water or chlorides, specify stainless or hot dip galvanized anchors instead.

A wedge anchor is a one-piece assembly: the threaded stud, the expansion clip, and a nut and washer already fitted on the threads. Drive the JTS4334D through your fixture into the drilled hole and tighten the nut to set it. No separate hardware to order, and no epoxy or screen tube like a chemical anchor needs.

50 anchors per jar, and the jar is the pack format, so ordering one quantity gets you the full 50-piece container rather than a loose count. That is a practical quantity for strut hanger layouts, equipment pads, or anchoring a run of conduit supports to a slab without making a second trip.

Use a wedge anchor like the 1/2 x 3-3/4 JTS4334D when you are bolting through a fixture and the stud can project. Use a drop-in anchor when you need a flush internally threaded socket so a rod or bolt can be removed and reinstalled later, which is common for overhead threaded-rod trapeze hangers. Wedge anchors are the simpler and faster of the two for surface-mounted strut, clips, and equipment feet.

No. Once the JTS4334D is driven and tightened, the clip is wedged permanently against the concrete. You can back the nut off and remove the fixture, but the stud stays in the slab. To cut it flush, grind it down; to abandon it, drive it below the surface only if the hole was drilled deep enough. Where you expect to unbolt and rebolt equipment repeatedly, use an internally threaded anchor instead.