Serrated Flange: The most prominent feature of under head serrated screws is the serrated flange beneath the head of the screw. This serrated flange is designed to press against the surface being fastened, creating friction and preventing the screw from loosening over time, especially in applications subjected to vibration.
Head Types: Under head serrated screws typically have a washer head or flange head design. The washer head provides a larger bearing surface, distributing the load and reducing the risk of deformation or damage to the material being fastened. The flange head, on the other hand, offers a lower profile and may be preferable in applications where space is limited.
Thread Design: These screws feature standard threads along the shaft, allowing them to be securely threaded into the mating material. The threads may be coarse or fine, depending on the specific application requirements and the type of material being fastened.
Materials: Under head serrated screws are available in various materials, including carbon steel, stainless steel, and other alloys. The choice of material depends on factors such as strength, corrosion resistance, and environmental conditions.
Applications: Under head serrated screws are commonly used in applications where a secure and reliable fastening is essential, particularly in environments with high vibration or movement. They are often used in automotive, aerospace, construction, and machinery industries, as well as in outdoor structures, equipment, and machinery.
Installation: To install an under head serrated screw, align the screw with the desired location on the mating surface and apply downward pressure while driving the screw using a power drill or screwdriver. The serrated flange beneath the head of the screw will bite into the surface, providing a secure grip and preventing loosening over time.
