Metallics BLS24PLB Bolt 3/8 x 3-1/2 Hx Lag Blt Pln-St (250 pcs)

No. The BLS24PLB is plain (uncoated) steel, which has no corrosion protection and will rust in wet or exterior conditions. Keep these for dry interior work such as anchoring strut, backboards, equipment frames, or wood blocking inside a building. For exterior or damp locations, order a hot-dip galvanized or stainless lag of the same 3/8 x 3-1/2 size instead.

Not on its own. The BLS24PLB is a wood lag with a tapered point and coarse thread, meant to thread directly into timber. For concrete, block, or brick you need either a concrete screw anchor or a lead or plastic shield sized for a 3/8 lag, with the masonry drilled to the shield's spec.

Hex head, so they drive with a socket or wrench, not a screwdriver bit. A 3/8 inch lag normally takes a 9/16 inch socket across the flats. An impact wrench with a socket is the usual way crews run 250 of these.

By the box of 250 pieces. That makes it a stocking item for a shop, service truck, or MRO crib doing repeat wood anchoring, not a count-out-a-handful purchase.