Sleeve Anchor, System of Measurement Inch, Anchor Diameter 5/8 in, Overall Length 4 1/4 in, Thread Size 1/2 In.-13, Drive Type External Hex, Head Type Hex, Material Steel, Finish Zinc Plated, Drill Bit Size 5/8 in, Compatible Material Block, Brick, Concrete, Minimum Installation Torque 48 ft-lb, Maximum Installation Torque 48 ft-lb, Minimum Installation Depth 2 in, Maximum Material Thickness 2 1/4 in, Maximum Ultimate Shear Strength 8,080 lb, Maximum Ultimate Tension Strength 6,120 lb Dynabolt(R) Sleeve Anchors feature an expandable sleeve over threaded bolt, with a nut and washer. They can be installed through the object being fastened. The 6-rib sleeve helps ensure holding power of expansion device. Use in masonry applications such as concrete, hollow or shallow masonry, or grout-filled blocks.