Power Lags 0.312 x 3 in. Washer Carbon Steel Lag Screw, Yellow Zinc - Pack of 12

<p> T-Star Washer Head construction fasteners with yellow zinc coating are intended for interior structural wood-to-wood connection applications. These fasteners are designed with a low profile large diameter wafer head for applications requiring additional surface area under the head for superior pull-down force. Cold-rolled "carbon steel" wire, heat treated to grade 5 durability and plated with a yellow zinc finish to prevent red rust. "Yellow zinc" is tested and recognized for use in above-ground contact pressure-treated lumber for interior dry/damp general construction applications. </p><b>Features</b><ul><li>Allow for quicker, easier fastening</li><li>Multi-ply LVL beam assembly</li><li>Multi-ply girder truss assembly</li><li>Specialty Screws</li><li>Pack of 12</li></ul><b>Specifications</b><ul><li><b>Finish:</b> Yellow Zinc</li><li><b>Grade:</b> 5</li><li><b>Head Type:</b> Washer</li><li><b>Length (in.):</b> 3</li><li><b>Material:</b> Carbon Steel</li><li><b>Thread Type:</b> Serrated</li><li><b>Size:</b> 5/16</li><li><b>Head Diameter (in.):</b> 0.776 in.</li><li><b>Head Height (in.):</b> 0.140 in.</li><li><b>Drive Size:</b> T-40</li><li><b>Drive Style:</b> Star</li><li><b>Thread Length(in.):</b> 1.650 in.</li><li><b>Country of Origin:</b> United States of America</li><li><b>Weight:</b> 0.54 lbs</li></ul>- SKU: ZX9ACHR175397