Power Pro 1/4" x 1-1/4" Flat-Head Concrete Screw Anchors, 225-Pack are the for fastening into concrete and masonry materials with confidence and durability. These screw anchors feature a durable epoxy coating that delivers superior, multi-layer corrosion resistance, making them i for treated lumber and outdoor applications. Tested to withstand over 1,500 hours of rigorous salt spray, they exceed industry standards and come with multiple building code approvals, including ICC ES ratings for concrete, masonry, and chemically treated wood. Their blue color complements a variety of projects, while the heat-treated carbon steel construction ensures high material strength and long-lasting performance. The wide, serrated threads cut quickly and cleanly into concrete, and the mid-crossband threads provide excellent drive stability. Threaded to the tip, these anchors penetrate wood easily without the need for a chisel point. Designed with a flat head and under-head micro-nibs, they create a clean countersink in wood, making them for wood-to-concrete and countersunk hole applications. The star drive with six contact points helps spread torque evenly, preventing stripping during installation. These anchors are also for use with treated lumber, meeting AC257 standards, and are in the process of obtaining additional building code approvals for California, Florida, and Miami-Dade County. Model Number: 377030