Wedge Anchor System of Measurement Inch Anchor Diameter 5/16 in Thread Size 5/16 in Overall Length 3 1/2 in Thread Length 2 1/4 in Material Stainless Steel Material Grade/Class 18-8 Finish Plain Compatible Material Concrete Drill Bit Size 5/16 in Minimum Installation Depth 1 1/2 in Ultimate Tension Strength (4 000 psi Concrete) 2 530 lb Wedge Anchor Type Wedge Anchor Seismic Approved No ICC Approved for Cracked Concrete No ICC Approved for Un-Cracked Concrete No