Metallics J5022 Anchors 1/2 X 2-1/4 Slv Ancr &Nt St-zn (Jar 25)

Sleeve anchors are drilled to match the anchor's nominal diameter, so a 1/2 inch sleeve anchor takes a 1/2 inch carbide bit. The sleeve itself slips into the hole, then tightening the supplied nut expands it against the concrete or block. Drill depth needs to exceed the embedded portion of the 2-1/4 inch length so the anchor seats fully.

Zinc plating on steel is a mild indoor corrosion coating. It's fine for dry interior concrete, electrical rooms, and covered areas, but in a wet vault, a washdown area, or exterior exposure the plating will eventually rust through. For those locations specify a stainless sleeve anchor or a hot-dip galvanized anchor instead.

The 2-1/4 inch overall length is split between embedment in the base material and the thickness of whatever you're clamping, so on a 1/2 inch anchor plan on fastening thin material only, roughly strut, a conduit clamp, or a light bracket. If you're mounting through a thicker plate or spacer, step up to a longer sleeve anchor in the same 1/2 inch diameter.

Sleeve anchors are one of the few mechanical anchors rated by manufacturers for brick and hollow block as well as solid concrete, because the expanding sleeve spreads load over a longer contact area instead of a single cone. That's the main reason to pick a sleeve anchor like the 1/2 x 2-1/4 J5022 over a wedge anchor, which wants solid concrete.

Each jar holds 25 anchors and the nuts are included, so you're not sourcing hardware separately. For a repeat spec across multiple openings or a full strut run, count on one anchor per fastening point and order jars accordingly.