Pre-assembled expansion anchor for fastening fixtures, machinery, and structural elements to solid concrete and uncracked masonry. The Ankr-Tite design uses a hardened expansion clip and tapered cone to generate positive wedge engagement against the hole wall when the nut is torqued, delivering high pull-out and shear values in slab, wall, and overhead applications.

• Thread size: 3/8"-16 UNC
• Anchor diameter: 3/8"
• Overall length: 5"
• Threaded shank length: 3-1/4" (from the top of the anchor)
• Drill bit required: 3/8" carbide-tipped masonry/SDS bit (drill diameter equals anchor diameter)
• Manufacturer minimum embedment: 1-5/8" for full rated holding power in 3,000+ psi concrete
• Carbon steel construction with zinc plated (clear chromate) finish for indoor and protected outdoor corrosion resistance
• Hex nut and flat washer pre-assembled on the threaded end for immediate installation
• For solid concrete, uncracked masonry, and stone; not for hollow block face, brick face, or grouted CMU cell tops

Diameter Use Case: Medium-duty fixtures: handrail brackets, equipment feet, light machinery base plates, 2x4-6 ledger boards, awning posts, garage shelving uprights.

Length Context: Extra-long 3/8" anchor for very thick fixtures or multi-layer assemblies - 2x6 ledger over membrane, steel column base with grout pad, or retrofit through 2"-3" of finish material.

Installation: Drill the hole to the same diameter as the anchor and at least 1/2" deeper than the embedment depth so drill dust does not block the wedge clip from setting. Blow or vacuum the hole clean - residual dust is the leading cause of pull-out failure. Thread the supplied nut flush with the top of the bolt to protect the threads, set your fixture over the hole, and tap the anchor through the fixture until the washer seats against the fixture. Tighten the nut with a torque wrench to the manufacturer install torque (25 ft-lb for 3/8"); the cone draws up into the expansion clip and locks the anchor against the hole wall.

Hole Depth Tip: Carbide bits dull as they wear and slow down at the bottom of the hole, so it is easy to end up with a hole shallower than the listed length. Always drill 1/2" deeper than your needed embedment and clear the hole with a blow-out bulb or vacuum - shallow or dirty holes are the most common reason wedge anchors fail to set or pull out under shock load.

Embedment Tip: Pull-out and shear values scale with embedment depth, not with overall length. The minimum embedment shown above is the manufacturer minimum for the rated values; for maximum holding power use the deepest embedment your fixture allows. Edge distance from the anchor to any concrete edge should be at least 6x to 10x the anchor diameter to prevent cone-failure spalling at the edge.