Metallics LCS3830SS Anchors 3/8 X 3 Hx Lg-Dia Conc Scr SS (Jar 50)

Yes, the LCS3830SS is the stainless steel version of the Metallics large-diameter concrete screw, which is what you want for exterior anchoring, damp mechanical rooms, parking structures, or coastal work where a plated carbon steel screw would rust out. Stainless also avoids the galvanic problem of mixing a zinc-plated fastener with stainless strut or clamps.

No sleeve, shield, or plastic plug is needed. A concrete screw like the LCS3830SS cuts its own threads into a predrilled hole in the base material and is driven straight in with a socket on the hex head. That also means it can be backed out and the fixture removed without destroying the anchor hole, which an expansion wedge anchor will not let you do.

Fifty pieces per jar. The jar packaging is the standard Metallics put-up for this anchor, which is convenient on a service truck, but plan quantity against your layout first: a 3/8 inch anchor is typically used in groups of two or four per base plate or strut bracket, so 50 covers roughly a dozen to two dozen attachment points.

For strut channel, pipe straps, conduit clamps, and equipment base plates, the hex head is the right pick, and that is what the LCS3830SS uses. It drives with an impact wrench and a socket rather than a bit, takes far more torque without camming out, and the washer face bears on the fixture surface. A flat or countersunk head is only for applications where the fastener has to sit flush in a countersunk hole.

Large-diameter concrete screws such as the Metallics LCS3830SS are installed in solid masonry base material by tapping threads into a drilled hole. In hollow block the threads only engage the face shell, so anchor into the mortar joint or a grout-filled cell, and keep well clear of the slab edge. Anything with hollow or friable base material wants a different anchor type entirely.

A rotary hammer with a carbide bit matched to the anchor, a blow-out bulb or vacuum to clear the hole, and an impact wrench or ratchet with a socket for the hex head. Nothing ships in the jar but the 50 anchors, so the drill bit, any washers, and the fixture hardware come separately.