Metallics JTS103SSD Anchors 1/4 X 3-1/4 Wedge Ancr SS (Jar 50)

Yes. It's a stainless steel wedge anchor, which is what you want for exterior slabs, parking structures, pool decks, wash-down areas, and anywhere a plated carbon steel anchor would rust and stain the concrete. Pair it with stainless nuts and washers so you aren't mixing metals at the surface.

Wedge anchors like the 1/4 x 3-1/4 JTS103SSD are for solid, poured concrete. In hollow block, brick, or mortar joints the expansion clip has nothing solid to bite into, so use a sleeve anchor or a screw anchor rated for masonry instead.

With a 1/4 inch wedge anchor at 3-1/4 inches overall, the length is split between embedment in the concrete and the stickout for your fixture and nut. The longer 3-1/4 length is for thicker attachments or for reaching past a topping slab, not for thin sheet-metal brackets, where a shorter 1/4 inch anchor would be the better pick. Figure your fixture thickness plus nut and washer, and keep enough remaining length buried in sound concrete.

No. Once a 1/4 x 3-1/4 wedge anchor is driven and the nut torqued, the clip has expanded against the hole wall and the stud will not come back out. You can back the nut off and remove your fixture, but the anchor stays. If you need a removable fastening, use a drop-in anchor with a machine bolt or a female threaded insert instead.

Fifty anchors per jar. Metallics ships this one in a jar rather than a box, which keeps the nuts and washers from scattering in a service truck. Each anchor comes as the stud, expansion clip, nut and washer ready to drive.

A 1/4 inch wedge anchor carries 1/4-20 threads on the exposed stud, so the supplied nut and any replacement hardware you add are standard 1/4-20. Keep replacements in stainless to match the anchor body.