Concrete screws are used in a variety of applications, including securing metal brackets and metal panels to concrete or masonry surfaces, securing shelving and storage units, and securing fixtures and accessories to walls. They are an important part of construction projects, such as building retaining walls or installing steel framing into buildings. Concrete screws are also often used in home DIY projects, such as installing shelves or installing pictures and mirrors..There are several key properties that make concrete screws such popular and widely used fasteners. First, they're easy to install, requiring only a pre-drilled hole, a hammer, and a screwdriver. They are also very versatile and are available in a variety of sizes and lengths to suit a variety of applications. Another key property of concrete screws is their strength. The threads on the screw bite into the material creating a strong and secure grip that can support heavy loads. This makes them an excellent choice for projects requiring reliable and long-lasting restorations. Finally, concrete screws are an affordable and cost-effective option compared to other fasteners such as expansion bolts or wedge anchors. They are also easily removable if necessary, making them ideal for temporary fixtures or structures.PL: PLAIN YZ: YELLOW ZINC ZN: ZINC KP: BLACK PHOSPHATED BP: GREY PHOSPHATED BZ: BLACK ZINC BO: BLACK OXIDE DC: DACROTIZED RS: RUSPERT XY: XYLAN Head Styles Head Recess Threads Points