B-Line Eaton series fastener hardware and accessories, Suitable for solid and hollow core materials, Stainless steel type 304 , 3/8" x 4",Sleeve type

Both. The ASA series sleeve anchor is rated for solid and hollow core materials, which is the practical advantage of a sleeve type over a wedge anchor. The sleeve expands along its length as the nut is tightened, so it bears against the wall of a hollow block cell instead of relying on a single expansion point in dense concrete. That makes it a reasonable single anchor to stock for mixed substrates on the same job.

Yes. The ASA-50-400HNSS4 anchor is made from type 304 stainless steel, so it suits exterior mounting, washdown areas, coastal and damp plant environments where a zinc plated carbon steel anchor would bleed rust and fail. It also avoids galvanic trouble when you are anchoring stainless strut or stainless brackets.

The ASA series stainless sleeve anchor is UL Listed, which is what an inspector or a spec writer is usually looking for when the anchor is carrying conduit racks, strut, cable tray supports or enclosures. It is catalogued by Eaton B-Line as electrical department hardware and is the anchor family normally paired with their strut and support fittings.

A wedge anchor only works in solid, sound concrete, because it grips through a small clip at the very bottom of the hole. The B-Line ASA is a sleeve type expansion anchor, and its expansion sleeve runs the length of the embedment, so it also works in hollow core materials such as block. Pick the sleeve anchor when you are drilling into brick, block or mixed substrate and the wedge anchor when you have thick structural concrete and need maximum pullout in that one condition.

It is a complete assembly. The hex nut and washer come on the anchor body, so you drill, drive it through the fixture into the hole and tighten the nut to set the sleeve. Nothing else is needed to make the anchor itself up, though carbide bit sizing to the anchor body and proper hole depth still matter.