Wing Screws, also commonly referred to as butterfly screws, are a specialized category of fasteners distinguished by their extended lateral wings or “ears.” This design facilitates manual tightening and loosening without the need for tools, making them ideal for applications requiring frequent adjustment, quick assembly, or disassembly. They are engineered to create secure, semi-permanent connections and are often paired with matching wing nuts for versatile point-of-use adjustments.
This product series adheres to the DIN 316 AF standard, ensuring dimensional consistency, thread accuracy, and reliable mechanical performance. The wing head is ergonomically shaped to provide a comfortable grip and sufficient torque application by hand. Available in a comprehensive range of metric sizes from M3 to M12, and with thread lengths spanning from 6mm to 60mm, these Wing Screws offer broad compatibility for diverse assembly requirements in machinery, enclosures, furniture, and industrial equipment.
Manufactured from high-quality austenitic stainless steel, including grades 304, 316, and 201, these screws offer a balance of strength and corrosion resistance tailored to different environmental conditions. Grade 316 provides superior resistance to chlorides and is suitable for marine or chemical-exposed settings, while grade 304 serves as a cost-effective option for general-purpose use. The surface is typically finished in a natural mill condition or with a passivation treatment to enhance the stainless steel’s inherent protective oxide layer and improve durability.
The primary advantage of using Wing Screws lies in their operational efficiency and accessibility. Their tool-free operation reduces assembly time, minimizes the risk of tool-induced damage to surfaces, and allows for adjustments in confined or awkward spaces. When used with wing nuts, they form a multi-functional clamping system that can be easily tightened or loosened from various angles, suitable for panels, access doors, light fixtures, and adjustable frames, etc.
DIN-standard Wing Screws represent a practical and reliable fastening solution where manual operability and repeated adjustability are prioritized. Their standardized dimensions, material options, and functional design make them a valuable component for engineers, technicians, and maintenance personnel. Selecting the appropriate size, material grade, and finish ensures optimal performance, longevity, and ease of use in both industrial and commercial applications.
Post time: Dec-18-2025