B-Line ASA-75-400HNSS4 Eaton series fastener hardware and accessories

The ASA-75-400HNSS4 sleeve anchor is made from type 304 stainless steel, so corrosion resistance is built into the anchor body rather than a plated coating. That makes it the choice for exterior walls, parking structures, wash-down areas and other damp locations where a zinc-plated carbon steel anchor would rust at the head. For chloride-heavy coastal or pool chemistry, a 316 grade anchor is the usual step up.

It works in both. The ASA-75-400HNSS4 is rated for solid and hollow core materials, which is the practical advantage of a sleeve anchor over a wedge anchor: the expansion sleeve grips along its length instead of relying on a single expansion clip biting into solid concrete, so it can be set in hollow CMU as well as poured concrete or solid block. Drill clean, blow the hole out, and set the anchor so the sleeve is fully inside the base material, not in the fixture.

UL Listed, yes. That matters for electricians and inspectors anchoring strut, conduit hangers, cable tray brackets and enclosures, where the fastening into the structure is part of the inspected support system. The anchor is an Eaton B-Line electrical-department fastener intended for that kind of support work.

The anchor measures 2.25 inches in height, which is the total anchor length you have to work with. Subtract the thickness of the strut channel, bracket or base plate you are fastening, plus the nut and washer, and the remainder is your embedment into the base material. Drill the hole deeper than the embedment so debris has somewhere to go and the anchor can be driven fully home.

Use a wedge anchor when you have sound poured concrete and want maximum pull-out in a small diameter. Use a sleeve anchor, like the ASA-75-400HNSS4, when the base material varies or is hollow, because it is rated for solid and hollow core materials and spreads its grip over the length of the sleeve. On a job where some walls are poured and some are block, the sleeve anchor lets you carry one fastener instead of two.

The ASA-75-400HNSS4 is catalogued at .65 lb, which is a pack weight rather than a single small anchor, so budget shipping weight accordingly when you are ordering a quantity for a full run of strut or tray supports. It is sold under the single model designation ASA-75-400HNSS4.

You can, but keep it deliberate. The anchor is type 304 stainless; bolting it against galvanized or plated steel in a wet exterior location sets up a dissimilar-metal couple that will eat the zinc first. Indoors and dry, it is a non-issue. Where the assembly stays wet, match the nuts, washers and strut to stainless so the whole support run corrodes at the same rate.