Metallics JTS3234G Anchors 3/8 x 2-3/4 Wdg Galv (Jar 100)

A 3/8 inch wedge anchor is set in a 3/8 inch hole drilled with a carbide hammer-drill bit. The anchor diameter and the bit diameter are the same on wedge anchors, and the hole has to go deeper than the embedment so drill dust can clear. With a 2-3/4 inch anchor you lose length to the thickness of whatever you're fastening, so figure your embedment off the remaining length in the concrete.

Wedge anchors like the 3/8 x 2-3/4 JTS3234G are for solid poured concrete only. They work by expanding a clip against the hole wall, which needs solid base material to react against. In hollow block, brick or masonry with voids, use a sleeve anchor or a screen tube with adhesive instead.

The galvanized coating on the JTS3234G gives it more corrosion resistance than a plain zinc-plated anchor, so it's the usual pick for exterior slabs, loading docks, parking structures and damp interior spaces. For continuous saltwater exposure or submerged work, stainless is the material to specify instead.

The anchors ship complete with their nut and washer, which is how wedge anchors are supplied. What you supply is a rotary hammer or hammer drill with a 3/8 inch carbide bit, a blow-out bulb or vacuum to clear the hole, and a torque wrench or impact to pull the nut down and set the clip. Nothing else is needed on the anchor side.

No. A set wedge anchor is permanent. The 2-3/4 inch body expands a clip into the concrete and will not back out. You can run the nut off and cut or grind the stud flush, or drive it below the surface and patch, but plan on replacing rather than reusing it. If you need a removable fastening, use a female-threaded drop-in anchor and a machine bolt.

This is the workhorse size for anchoring to concrete on electrical work: strut channel and trapeze hangers, panel and enclosure backing, transformer and equipment pads, conduit support brackets, and light pole or bollard bases. Metallics catalogues the JTS3234G as electrical-trade fastening stock, and the jar of 100 is sized for that kind of repetitive mounting.

One hundred anchors per jar. Metallics packs this 3/8 x 2-3/4 galvanized wedge anchor in jar form, so a single order unit covers a full day of strut or equipment mounting without breaking into loose bulk.