FastenMaster Headlok 6 in. Structural Wood Screw, 12-Count delivers a strong, code-compliant connection in seconds, making it an essential choice for various construction projects. This heavy-duty structural wood screw requires no predrilling and higher design shear strength than 3/8" lag screws. The flat head design ensures a great finished look, while the SpiderDrive™ System maximizes bit fit with eight points of contact, reducing stripping during installation. Featuring a sharp gimlet point for fast penetration into wood and OSB and an aggressive thread for superior holding and withdrawal strength, these screws are i for deck framing, stair framing, attaching rigid foam (SIPs), fences, kitchen cabinets, and more. HeadLOK is tested and supported by engineering data that meets the most current ICC standards and is for use in ACQ or treated lumber, ensuring reliable and durable performance. Model Number: