Metallics LCS3850 Anchors 3/8 X 5 Hx Lg CSA St-zn (Box 40)

A 3/8 inch sleeve anchor is drilled with a 3/8 inch carbide bit; the anchor's nominal diameter matches the hole size, and the sleeve expands against the hole wall as the hex nut is tightened. Drill the hole deeper than the embedment you need so debris can settle, and clear the dust before setting. The LCS3850 is 5 inches overall, so the usable embedment is 5 inches minus the thickness of whatever you are fastening.

Hex head sleeve anchors of this type are made for solid concrete, hollow or solid block, and brick, which is what separates them from a wedge anchor that needs solid concrete only. The LCS3850 is zinc plated steel, so keep it to dry interior or protected locations; for wet or exterior work use a stainless or hot dip galvanized anchor instead.

Hex head sleeve anchors tighten with a socket or wrench rather than a screwdriver, so you get controlled torque, which is how the sleeve expands. A 3/8 inch anchor like the LCS3850 takes a standard hex nut and washer that come assembled on the bolt, so no separate hardware is needed to set it.

It comes as a box of 40 pieces of the 3/8 x 5 hex head anchor, which suits a repeat install such as a run of strut hangers or equipment pads rather than a one-off repair.