HeadLOK 3/16 in. 2-7/8 in. Star Drive, Flat Head Heavy Duty Wood Deck Screws (50-Pack)HeadLOK is a heavy duty wood screw that does it all with an internal drive and flat head. HeadLOK offers higher design shear than 3 8 in. lag screws and no predrilling is needed, HeadLOK zips right in and is ideal for many wood to wood applications including decks, fences, SIPs, kitchen cabinets and more. The patented SpiderDrive eliminates cam out and improves installation speed. No predrilling Faster, easier than 3 8 lag screws Non countersinking