We supply standard DIN551 and GB73 slotted flat end set screws, made of premium stainless steel, also known as headless grub screws, locking stop screws and ejector screws. Adopting slotted flat end design with headless structure, these set screws feature precise thread specification, accurate dimensional tolerance and smooth surface finish. The flat end design fits closely with workpiece surfaces without damaging components, while the slotted structure enables easy installation and disassembly with a flat screwdriver. Made of stainless steel, it delivers excellent rust resistance, corrosion resistance and stable mechanical performance, suitable for long-term use in humid, indoor and precision working environments. Widely applied in precision machinery, mold accessories, instrumentation, electronic equipment, automation components and hardware assembly industries, it is ideal for precise positioning, limiting fixing and anti-loosening locking. We have complete standard specifications in stock, support bulk wholesale and non-standard customized processing, providing reliable standard fastener solutions for industrial precision assembly and mechanical locking.