Metallics TS3851SSD Anchors 250 3/8 x 5 Wdg SS (Box 50)

Stainless is the reason to pick this one. The TS3851SSD is a stainless steel wedge anchor rather than zinc plated carbon steel, so it suits exterior concrete, wash-down areas, pool decks, coastal work, and anywhere a plated anchor would bleed rust onto the slab. For dry interior anchoring, a plated carbon steel wedge anchor of the same 3/8 x 5 size does the same mechanical job.

A 5 inch overall length is long, so most of it is available for fixture thickness once you set embedment. Wedge anchors only grip the part of the length that is in the concrete, and the remainder passes through the material you are fastening plus the nut and washer. A 5 inch anchor is the one you reach for when you are going through a thick base plate, a sill, a sleeper, or a layer of grout or topping, not for thin brackets.

Wedge anchors are for solid, poured concrete. In hollow block, brick, or grouted masonry the cone cannot expand against consistent material, and the usual choice is a sleeve anchor or a screw anchor rated for masonry. Use the 3/8 x 5 stainless wedge anchor in cured concrete only.

Not cleanly. A wedge anchor is a permanent mechanical anchor; once driven and torqued, the expansion clip grips the hole wall and the body will not back out. You can take the nut off and cut or grind the stud flush with the slab, but plan the layout as permanent. If you expect to unbolt and remount, a female threaded insert or drop-in anchor is the better choice.