Metallics J3114SS Anchors 5/16 x 1-1/2 Hex Nut Sleeve SS (Jar 100)

Total length is 1-1/2 inches, and that length covers both the embedment in the masonry and the thickness of whatever you are clamping. With a 5/16 inch sleeve anchor that leaves you room for thin material only, think strap, bracket or a single piece of channel, not a stacked or heavy mount. If you are fastening through anything substantial, step up to a longer sleeve anchor in the same 5/16 inch diameter.

Sleeve anchors are one of the few mechanical anchors rated for solid concrete, brick and hollow block, because the expanding sleeve grips over a broad area rather than wedging in a single point. In hollow block, set it in the face shell, not a mortar joint. The J3114SS is the 5/16 inch by 1-1/2 inch version with a hex nut head.

Sleeve anchors are drilled to the same nominal diameter as the anchor, so a 5/16 inch carbide bit for the J3114SS. Drill through the fixture where you can so the hole lines up, and go deeper than the 1-1/2 inch anchor length to leave room for dust.

Stainless is what you want where the fastener sees moisture or washdown, outdoor strut and conduit runs, parking structures, exterior lighting bases, food plants. The J3114SS is stainless, so it holds up where a zinc plated anchor would bloom rust and stain the concrete. Indoors and dry, plated steel will do the same mechanical job.

It is a hex nut sleeve anchor, so the nut and washer ship assembled on the stud. Nothing else to order. You tighten the nut to expand the sleeve against the hole wall.

The J3114SS is catalogued as a single configuration, 5/16 by 1-1/2 inch stainless, supplied in a 100 count jar. If you need a different diameter or length, that is a different Metallics part number rather than an option on this one.