Metallics TS385 Anchors 3/8 X 5 Wedge Ancr St-zn (Box 50)

The TS385 is a 3/8 inch diameter wedge anchor, so it goes into a 3/8 inch hole drilled with a carbide bit. Wedge anchors are drilled to the nominal anchor diameter, which lets the anchor be driven through a fixture hole of the same size into the hole below. Drill the hole deeper than the embedment you need so dust has somewhere to go.

It's a zinc plated carbon steel wedge anchor, which is a mild corrosion coating meant for dry interior concrete work, machine rooms, slabs and ceilings. For exterior exposure, wash-down areas or anywhere it sees moisture or chlorides, go with a stainless steel wedge anchor or a hot dip galvanized anchor instead.

Wedge anchors like the TS385 are designed for solid poured concrete only. The expansion clip needs a dense, uniform base material to bite into, so hollow CMU, brick and grout-filled block are the wrong application. For block walls use a sleeve anchor or a screw anchor rated for hollow masonry.

That's exactly what it's for. The TS385 is a 3/8 x 5 inch wedge anchor sold for electrical fastening work, which covers strut channel, conduit hangers, trapeze racks, panel and enclosure mounting into poured concrete. The 5 inch length gives you room to anchor through a thick fixture base or standoff and still get full embedment in the slab.

Length is about how much material you're clamping plus the embedment you need in the slab. The 5 inch TS385 is the long option in the 3/8 inch family, for cases where the fixture base, shim stack, standoff or topping slab eats several inches before you reach sound concrete. If you're bolting a thin bracket flat to a slab, a shorter 3/8 anchor is the better choice because you won't be left with excess thread above the nut.

The TS385 ships 50 anchors to a box. Nuts and washers come assembled on wedge anchors, so each piece is ready to drive without separate hardware. If you're laying out a long strut run, count four anchors per support point and order box quantities against that.

Order it as Metallics TS385. That number covers the 3/8 x 5 inch zinc plated steel wedge anchor in the 50 piece box, and it's the single configuration under that model designation.