Metallics JTS3312G Anchors 3/8 x 3-1/2 Wdg Galv (Jar 100)

Wedge anchors are drilled with a carbide bit the same nominal diameter as the anchor, so the JTS3312G 3/8 x 3-1/2 inch wedge anchor goes into a 3/8 inch hole drilled in the concrete. Drill the hole deeper than the planned embedment so dust and cuttings have somewhere to fall, blow it clean, then drive the anchor through the fixture and tighten the nut to expand the wedge.

No. Wedge anchors such as the 3/8 x 3-1/2 inch JTS3312G are for solid, poured concrete only. The wedge needs dense, uniform base material to expand against, and hollow block or brick will crumble or let the anchor spin. For block walls use a sleeve anchor or a screw anchor rated for masonry, and for hollow cells use a toggle.

It is a galvanized wedge anchor, so the zinc coating gives it more corrosion resistance than a plain zinc-plated anchor, which makes it the usual pick for exterior slabs, parking structures, loading docks, and damp mechanical rooms. For continuous saltwater exposure or submerged conditions, stainless is the correct material instead.

That is the common use for this size. A 3/8 x 3-1/2 inch galvanized wedge anchor takes 3/8-16 strut nuts, beam clamps, and threaded rod couplings used on conduit racks and trapeze hangers, and the galvanized finish holds up in unconditioned spaces. One caution for overhead work: wedge anchors must be in solid concrete and fully tightened to set, so they are not appropriate in metal deck flutes or lightweight fill, where a deck hanger or a drop-in anchor in the structural slab is the right call.

One hundred anchors per jar, shipped in Metallics' jar pack rather than a loose box, which is how most electrical and MRO stockrooms keep them on the shelf. Note that wedge anchors ship with nut and washer as part of the assembly, so each piece in the jar is a complete anchor ready to drive.