Wedge anchor: 1/2 in diameter x 4.25-7 in length. Carbon steel zinc-plated or stainless steel. Minimum embedment: 2.25 in (1/2 in anchor). Allowable tension: 2,000-4,000 lbs (varies by embedment and concrete strength). Allowable shear: 3,000-5,000 lbs. Installation: drill hole (1/2 in carbide bit), clean hole, insert anchor, tighten nut to expand wedge clip. Edge distance: min 5 diameters (2.5 in). Spacing: min 10 diameters (5 in). Standards: ACI 318 Chapter 17, ICC-ES ESR reports. Alternatives: sleeve anchor (lighter duty), drop-in anchor (flush mount), adhesive anchor (epoxy, higher loads). Cost: $1-$4 each. CSI 05 05 19.