Simpson Strong-Tie® Sleeve anchor, Pre-Assembled Expanding, series: Sleeve-All®, 5/16 in dia, 1/4-20, Carbon Steel, Hex, Hex Drive, Zinc Plated, 1-7/16 in Minimum Embedment Depth, 1-1/2 in OAL, 5/16 in Drill, 540 lb at 2000 psi Shear Strength, 280 lb at 2000 psi Tensile. Sleeve-All® Expanding Anchors are Pre-Assembled, Expanding Sleeve Anchors For Use in All Types of Solid Base Materials. This Anchor is Available in Acorn, Hex, Rod Coupler, Flat or Round Head Style For a Wide Range of Applications. Simpson Strong-Tie® SL31112H Sleeve-All® Pre-Assembled Expanding Sleeve Anchor, 5/16 in dia, 1/4-20 Thread, Carbon Steel, Hex Head and Drive