Hammer Drive Anchor Anchor Diameter 1/4 in Overall Length 3 in Anchor Material Steel Finish Zinc Plated Head Type Flat Head Height Not Applicable Head Diameter 0.5 in Drill Bit Size 1/4 in Minimum Installation Depth 1 1/8 in Ultimate Shear Strength (4 000 psi Concrete) 2 230 lb Ultimate Tension Strength (4 000 psi Concrete) 2 010 lb Drive Pin Anchor Type Steel Drive Anchors Compatible Material Masonry Stone Material Grade/Class Grade 5 Removable Removable