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The HILLMAN FASTENERS 370806 is a hex nut sleeve anchor designed for secure fastening into concrete, block, and masonry substrates. Each anchor features a 3/8-16 bolt diameter and measures 1/2 inch in diameter by 3 inches in length. The sleeve expands against the base material as the nut is tightened, creating a reliable mechanical connection. Made from steel with a zinc finish for corrosion resistance, these anchors are suited for structural and non-structural anchoring applications in both new construction and renovation work. Each box contains 25 anchors.
These hex nut sleeve anchors are commonly used in commercial and residential construction where a threaded anchor point is needed in concrete or masonry. Typical applications include securing structural supports, equipment bases, hangers, brackets, and framing components to concrete floors, walls, and block. The minimum embedment depth is 1.5 inches, and the maximum thickness of material to be fastened is 1.5 inches, making them well suited for mid-thickness mounting plates and structural connections.
Designed as an OEM-style replacement and standard-use sleeve anchor for concrete, block, and masonry anchoring applications requiring a 3/8-16 threaded connection.
Installation is performed by licensed contractors or qualified tradespeople using a hammer drill and appropriately sized carbide-tipped masonry bit. Drill the hole to the required depth, clear debris, insert the anchor, and tighten the hex nut to expand the sleeve against the base material. Always power down or de-energize any utilities in the work area before drilling into concrete walls or floors. Follow applicable local building codes and manufacturer load ratings when selecting anchor placement and spacing.
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