Metallics LCS14234 Anchors 1/4 x 2-3/4 Hx Hd Lg Dia CS St-zn (Jar 100)

The LCS14234 is carbon steel with zinc plating, which is a dry indoor finish. Zinc plating gives handling and light humidity protection only, so for exterior walls, parking structures, wet mechanical rooms or coastal exposure, move to a stainless or hot dip galvanized anchor instead. Indoors, in dry electrical rooms and ceilings, the zinc plated carbon steel is the normal choice.

Carbon steel concrete screw anchors like the LCS14234 drive into solid poured concrete, grout filled or solid CMU, and solid brick. In hollow block, land the screw in the face shell or a mortar filled cell, not the void, or use a toggle instead. They are not for drywall, plaster or wood alone.

The LCS14234 backs out with a socket, which is the practical advantage over a wedge or sleeve anchor that stays in the hole for good. Removal makes temporary bracing, layout and fixture relocation straightforward. Reusing the same screw in the same hole is not reliable, since the threads it cut are already formed; move to a fresh hole, or step up to a longer screw for deeper fresh thread.

A hammer drill with a carbide tipped masonry bit is required to make the hole for the LCS14234 in concrete or masonry; a standard rotary drill will not cut it. Driving the screw itself is then done with an impact driver and a hex socket, no hammer action.

Hex head, which is what the LCS14234 carries, drives with an impact driver and a socket and gives a bearing washer face against strut, clamp ears, pipe straps and bracket feet. Pick a flat or Phillips head version instead only where the fastener has to sit flush in a countersunk hole, since the hex head stands proud of the surface.

They ship 100 pieces to a jar. The jar pack is a practical count for a service van or an MRO crib, since the screws stay sorted by size rather than loose in a bin, and 100 of a 1/4 x 2-3/4 covers a typical run of strut and conduit mounting without reordering mid job.